Fix NPE

[jponge]

No description provided.

[codecov]

Codecov Report

Merging #545 (fe5d87f) into main (db818e6) will increase coverage by 0.52%.
The diff coverage is 100.00%.

❗ Current head fe5d87f differs from pull request most recent head 6f54e9e. Consider uploading reports for the commit 6f54e9e to get more accurate results

@@             Coverage Diff              @@
##               main     #545      +/-   ##
============================================
+ Coverage     89.81%   90.33%   +0.52%     
- Complexity     3002     3020      +18     
============================================
  Files           382      382              
  Lines         11632    11633       +1     
  Branches       1453     1455       +2     
============================================
+ Hits          10447    10509      +62     
+ Misses          610      573      -37     
+ Partials        575      551      -24     

Impacted Files	Coverage Δ	Complexity Δ
...e/mutiny/operators/multi/MultiOnFailureInvoke.java	94.73% <100.00%> (+0.29%)	2.00 <0.00> (ø)
...smallrye/mutiny/helpers/test/AssertSubscriber.java	90.97% <0.00%> (+0.75%)	76.00% <0.00%> (+1.00%)
...mallrye/mutiny/operators/multi/MultiFlatMapOp.java	85.98% <0.00%> (+0.93%)	3.00% <0.00%> (ø%)
...smallrye/mutiny/operators/multi/MultiEmitOnOp.java	90.47% <0.00%> (+0.95%)	2.00% <0.00%> (ø%)
...a/io/smallrye/mutiny/helpers/BlockingIterable.java	89.79% <0.00%> (+1.02%)	10.00% <0.00%> (ø%)
...y/operators/multi/processors/UnicastProcessor.java	97.34% <0.00%> (+1.76%)	45.00% <0.00%> (+1.00%)
...y/operators/multi/builders/IterableBasedMulti.java	86.17% <0.00%> (+2.12%)	4.00% <0.00%> (ø%)
...operators/multi/builders/CollectionBasedMulti.java	96.77% <0.00%> (+3.22%)	4.00% <0.00%> (ø%)
...perators/multi/processors/SerializedProcessor.java	97.02% <0.00%> (+3.96%)	28.00% <0.00%> (+2.00%)
...iny/operators/multi/builders/BaseMultiEmitter.java	87.50% <0.00%> (+4.16%)	21.00% <0.00%> (+1.00%)
... and 6 more