Fix bugprone-unused-return-value clang-tidy warning

[SiarheiFedartsou]

Benchmark Results

Benchmark	Base	PR
alias	aliased u32: 1101.37 plain u32: 1095.27 aliased double: 968.342 plain double: 985.91	aliased u32: 1220.84 plain u32: 1166.74 aliased double: 1132.6 plain double: 1003.04
e2e_match_ch	requests: 374 failures: 0 req/s: 6.234req/s avg: 5.529ms 50%: 3ms 75%: 4ms 95%: 18ms 98%: 33ms 99%: 70ms min: 1.501ms max: 96.334ms	requests: 359 failures: 0 req/s: 5.991req/s avg: 5.353ms 50%: 3ms 75%: 4ms 95%: 19ms 98%: 33ms 99%: 53ms min: 1.147ms max: 106.222ms
e2e_match_mld	requests: 365 failures: 0 req/s: 6.084req/s avg: 4.503ms 50%: 3ms 75%: 4ms 95%: 10ms 98%: 20ms 99%: 40ms min: 1.225ms max: 48.058ms	requests: 396 failures: 0 req/s: 6.609req/s avg: 4.700ms 50%: 3ms 75%: 4ms 95%: 10ms 98%: 32ms 99%: 58ms min: 1.294ms max: 100.437ms
e2e_nearest_ch	requests: 414 failures: 0 req/s: 6.900req/s avg: 1.644ms 50%: 2ms 75%: 2ms 95%: 2ms 98%: 2ms 99%: 2ms min: 1.199ms max: 4.045ms	requests: 413 failures: 0 req/s: 6.892req/s avg: 1.588ms 50%: 2ms 75%: 2ms 95%: 2ms 98%: 2ms 99%: 2ms min: 1.035ms max: 3.469ms
e2e_nearest_mld	requests: 444 failures: 0 req/s: 7.401req/s avg: 1.675ms 50%: 2ms 75%: 2ms 95%: 2ms 98%: 3ms 99%: 3ms min: 1.140ms max: 7.449ms	requests: 405 failures: 0 req/s: 6.759req/s avg: 1.601ms 50%: 2ms 75%: 2ms 95%: 2ms 98%: 2ms 99%: 2ms min: 1.069ms max: 5.575ms
e2e_route_ch	requests: 409 failures: 0 req/s: 6.817req/s avg: 4.124ms 50%: 4ms 75%: 5ms 95%: 6ms 98%: 7ms 99%: 9ms min: 1.521ms max: 10.102ms	requests: 410 failures: 0 req/s: 6.842req/s avg: 4.176ms 50%: 4ms 75%: 5ms 95%: 6ms 98%: 8ms 99%: 9ms min: 1.366ms max: 10.710ms
e2e_route_mld	requests: 400 failures: 0 req/s: 6.668req/s avg: 4.646ms 50%: 5ms 75%: 5ms 95%: 7ms 98%: 8ms 99%: 10ms min: 1.496ms max: 10.717ms	requests: 412 failures: 0 req/s: 6.876req/s avg: 4.188ms 50%: 4ms 75%: 5ms 95%: 6ms 98%: 7ms 99%: 10ms min: 1.529ms max: 11.369ms
e2e_table_ch	requests: 365 failures: 0 req/s: 6.084req/s avg: 38.616ms 50%: 26ms 75%: 47ms 95%: 120ms 98%: 130ms 99%: 140ms min: 2.614ms max: 146.388ms	requests: 391 failures: 0 req/s: 6.525req/s avg: 45.511ms 50%: 29ms 75%: 76ms 95%: 130ms 98%: 140ms 99%: 140ms min: 2.458ms max: 160.769ms
e2e_table_mld	requests: 369 failures: 0 req/s: 6.151req/s avg: 75.592ms 50%: 73ms 75%: 110ms 95%: 140ms 98%: 150ms 99%: 160ms min: 4.671ms max: 171.151ms	requests: 384 failures: 0 req/s: 6.409req/s avg: 52.338ms 50%: 35ms 75%: 83ms 95%: 130ms 98%: 140ms 99%: 140ms min: 2.491ms max: 362.127ms
e2e_trip_ch	requests: 384 failures: 0 req/s: 6.400req/s avg: 15.739ms 50%: 14ms 75%: 20ms 95%: 30ms 98%: 33ms 99%: 35ms min: 2.164ms max: 42.537ms	requests: 365 failures: 0 req/s: 6.091req/s avg: 16.294ms 50%: 15ms 75%: 21ms 95%: 31ms 98%: 35ms 99%: 35ms min: 2.587ms max: 39.104ms
e2e_trip_mld	requests: 345 failures: 0 req/s: 5.751req/s avg: 21.842ms 50%: 22ms 75%: 28ms 95%: 34ms 98%: 38ms 99%: 41ms min: 4.124ms max: 49.008ms	requests: 342 failures: 0 req/s: 5.708req/s avg: 17.987ms 50%: 17ms 75%: 24ms 95%: 33ms 98%: 36ms 99%: 39ms min: 1.804ms max: 44.905ms
json-render	String: 6.64187ms Stringstream: 9.32875ms Vector: 6.89803ms	String: 6.62568ms Stringstream: 9.35627ms Vector: 6.92196ms
match_ch	Default radius: 4.40558ms/req at 82 coordinate 0.0537266ms/coordinate Radius 5m: 4.39923ms/req at 82 coordinate 0.0536492ms/coordinate Radius 10m: 15.0154ms/req at 82 coordinate 0.183114ms/coordinate Radius 15m: 36.7744ms/req at 82 coordinate 0.448469ms/coordinate Radius 30m: 312.746ms/req at 82 coordinate 3.81398ms/coordinate	Default radius: 4.41805ms/req at 82 coordinate 0.0538787ms/coordinate Radius 5m: 4.38767ms/req at 82 coordinate 0.0535082ms/coordinate Radius 10m: 15.0246ms/req at 82 coordinate 0.183227ms/coordinate Radius 15m: 36.6784ms/req at 82 coordinate 0.447298ms/coordinate Radius 30m: 312.73ms/req at 82 coordinate 3.81378ms/coordinate
match_mld	Default radius: 2.79074ms/req at 82 coordinate 0.0340334ms/coordinate Radius 5m: 2.80465ms/req at 82 coordinate 0.0342031ms/coordinate Radius 10m: 10.1242ms/req at 82 coordinate 0.123466ms/coordinate Radius 15m: 25.9493ms/req at 82 coordinate 0.316455ms/coordinate Radius 30m: 304.064ms/req at 82 coordinate 3.70809ms/coordinate	Default radius: 2.76857ms/req at 82 coordinate 0.0337631ms/coordinate Radius 5m: 2.75576ms/req at 82 coordinate 0.0336068ms/coordinate Radius 10m: 10.1434ms/req at 82 coordinate 0.1237ms/coordinate Radius 15m: 25.9579ms/req at 82 coordinate 0.31656ms/coordinate Radius 30m: 303.413ms/req at 82 coordinate 3.70016ms/coordinate
osrm_contract	Time: 96.00s Peak RAM: 185.49MB	Time: 96.01s Peak RAM: 185.61MB
osrm_customize	Time: 1.31s Peak RAM: 115.05MB	Time: 1.31s Peak RAM: 115.10MB
osrm_extract	Time: 12.35s Peak RAM: 412.14MB	Time: 12.41s Peak RAM: 409.42MB
osrm_partition	Time: 2.27s Peak RAM: 150.51MB	Time: 2.33s Peak RAM: 148.41MB
packedvector	random write: std::vector 9873.75 ms util::packed_vector 74900.2 ms slowdown: 7.58579 random read: std::vector 8557.87 ms util::packed_vector 30682.3 ms slowdown: 3.58527	random write: std::vector 10937.2 ms util::packed_vector 74663.4 ms slowdown: 6.82656 random read: std::vector 9009.73 ms util::packed_vector 30940.3 ms slowdown: 3.4341
route_ch	1000 routes, 3 coordinates, no alternatives, overview=full, steps=true 513.002ms 0.513002ms/req 1000 routes, 2 coordinates, no alternatives, overview=full, steps=true 353.934ms 0.353934ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=full, steps=true 630.357ms 0.630357ms/req 1000 routes, 3 coordinates, no alternatives, overview=false, steps=false 151.311ms 0.151311ms/req 1000 routes, 2 coordinates, no alternatives, overview=false, steps=false 97.5076ms 0.0975076ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=false, steps=false 132.297ms 0.132297ms/req 1000 routes, 3 coordinates, no alternatives, overview=false, steps=false, radius=750 150.692ms 0.150692ms/req 1000 routes, 2 coordinates, no alternatives, overview=false, steps=false, radius=750 97.1382ms 0.0971382ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=false, steps=false, radius=750 133.127ms 0.133127ms/req	1000 routes, 3 coordinates, no alternatives, overview=full, steps=true 512.267ms 0.512267ms/req 1000 routes, 2 coordinates, no alternatives, overview=full, steps=true 353.505ms 0.353505ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=full, steps=true 645.919ms 0.645919ms/req 1000 routes, 3 coordinates, no alternatives, overview=false, steps=false 150.704ms 0.150704ms/req 1000 routes, 2 coordinates, no alternatives, overview=false, steps=false 97.761ms 0.097761ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=false, steps=false 132.082ms 0.132082ms/req 1000 routes, 3 coordinates, no alternatives, overview=false, steps=false, radius=750 151.081ms 0.151081ms/req 1000 routes, 2 coordinates, no alternatives, overview=false, steps=false, radius=750 97.4242ms 0.0974242ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=false, steps=false, radius=750 132.53ms 0.13253ms/req
route_mld	1000 routes, 3 coordinates, no alternatives, overview=full, steps=true 644.141ms 0.644141ms/req 1000 routes, 2 coordinates, no alternatives, overview=full, steps=true 442.442ms 0.442442ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=full, steps=true 815.308ms 0.815308ms/req 1000 routes, 3 coordinates, no alternatives, overview=false, steps=false 270.488ms 0.270488ms/req 1000 routes, 2 coordinates, no alternatives, overview=false, steps=false 164.212ms 0.164212ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=false, steps=false 288.699ms 0.288699ms/req 1000 routes, 3 coordinates, no alternatives, overview=false, steps=false, radius=750 260.024ms 0.260024ms/req 1000 routes, 2 coordinates, no alternatives, overview=false, steps=false, radius=750 162.393ms 0.162393ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=false, steps=false, radius=750 285.866ms 0.285866ms/req	1000 routes, 3 coordinates, no alternatives, overview=full, steps=true 642.001ms 0.642001ms/req 1000 routes, 2 coordinates, no alternatives, overview=full, steps=true 442.046ms 0.442046ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=full, steps=true 811.902ms 0.811902ms/req 1000 routes, 3 coordinates, no alternatives, overview=false, steps=false 266.708ms 0.266708ms/req 1000 routes, 2 coordinates, no alternatives, overview=false, steps=false 162.038ms 0.162038ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=false, steps=false 290.747ms 0.290747ms/req 1000 routes, 3 coordinates, no alternatives, overview=false, steps=false, radius=750 257.978ms 0.257978ms/req 1000 routes, 2 coordinates, no alternatives, overview=false, steps=false, radius=750 159.88ms 0.15988ms/req 1000 routes, 2 coordinates, 3 alternatives, overview=false, steps=false, radius=750 287.324ms 0.287324ms/req
rtree	1 result: 207.193ms -> 0.0207193 ms/query 10 results: 242.442ms -> 0.0242442 ms/query	1 result: 206.727ms -> 0.0206727 ms/query 10 results: 241.925ms -> 0.0241925 ms/query

[SiarheiFedartsou]

As I understand Boost deprecated return value in both these cases (it used to return error in the past), so it is safe to ignore it.