Linux

fix warnings in new versions of clang #2967

Job	Run time
build (asio-debugging=on picker-debugging=on)	5m 31s
build (extensions=off logging=off streaming=off super-seeding=off share-mode=off predictive-piece...	3m 51s
check headers	4m 29s
build (crypto=gcrypt)	4m 10s
clang-tidy	9m 41s
build (mmap-disk-io=off)	4m 51s
Fuzzers	15m 39s
pre-commit	26s
Simulations	8m 57s
Tests (webtorrent=on address-sanitizer=norecover undefined-sanitizer=norecover crypto=openssl)	6m 51s
Tests (toolset=clang logging=off address-sanitizer=norecover undefined-sanitizer=norecover)	11m 39s
Tests (thread-sanitizer=norecover crypto=openssl release debug-symbols=on cxxflags=-Wno-tsan)	5m 56s
Tests (crypto=gnutls)	5m 16s
Tests (deprecated-functions=off)	6m 29s
build dist (ubuntu-20.04)	3m 24s
build dist (ubuntu-22.04)	3m 11s
	1h 40m 21s

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