Fix comments #4084

Job	Run time
build-macos (-DCMAKE_DISABLE_PRECOMPILE_HEADERS=On)	7m 25s
build-macos (-DCMAKE_DISABLE_PRECOMPILE_HEADERS=On)	7m 25s
build-clang (-DCMAKE_DISABLE_PRECOMPILE_HEADERS=On)	11m 59s
build-clang (-DCMAKE_DISABLE_PRECOMPILE_HEADERS=On)	11m 59s
build-macos (-DMOLD_USE_ASAN=On)	17m 27s
build-macos (-DMOLD_USE_ASAN=On)	17m 27s
build-distros (alpine)	1m 5s
build-distros (alpine)	1m 5s
build-clang (-DMOLD_USE_TSAN=On)	17m 45s
build-clang (-DMOLD_USE_TSAN=On)	17m 45s
build-gcc	18m 0s
build-gcc	18m 0s
build-distros (archlinux)	1m 0s
build-distros (archlinux)	16m 33s
build-distros (fedora)	1m 6s
build-distros (fedora)	1m 6s
build-msys	10m 45s
build-msys	10m 45s
build-windows	28m 1s
build-windows	28m 1s
build-distros (gentoo/stage3)	1m 12s
build-distros (gentoo/stage3)	1m 12s
build-distros (opensuse/tumbleweed)	1m 6s
build-distros (opensuse/tumbleweed)	1m 6s
	4h 9m 15s

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