Fixed building by Clang. #63

Job	Run time
buildbot / check-if-allowed	1s
buildbot / debian-12, amd64, print	57s
buildbot / ubuntu-22.04, amd64, asan, njs	2m 46s
buildbot / ubuntu-22.04, amd64, msan	4m 27s
buildbot / alpine-3.19, amd64	7m 16s
buildbot / ubuntu-22.04, amd64, asan, quickjs	7m 16s
buildbot / alpine-3.19, arm64	4m 50s
buildbot / amazonlinux-2, amd64	4m 18s
buildbot / amazonlinux-2, arm64	3m 18s
buildbot / amazonlinux-2023, amd64	12m 7s
buildbot / amazonlinux-2023, arm64	9m 38s
buildbot / debian-11, amd64	5m 13s
buildbot / debian-11, arm64	3m 46s
buildbot / debian-12, amd64	6m 23s
buildbot / debian-12, arm64	4m 44s
buildbot / freebsd-14, amd64	5m 15s
buildbot / rhel-8, amd64	5m 17s
buildbot / rhel-8, arm64	3m 29s
buildbot / rhel-9, amd64	12m 10s
buildbot / rhel-9, arm64	9m 58s
buildbot / sles-12, amd64	3m 16s
buildbot / ubuntu-20.04, amd64	6m 4s
buildbot / ubuntu-20.04, arm64	3m 53s
buildbot / ubuntu-22.04, amd64	10m 2s
buildbot / ubuntu-22.04, arm64	7m 25s
buildbot / ubuntu-24.04, amd64	11m 47s
buildbot / ubuntu-24.04, arm64	8m 3s
buildbot / debian-12, x86	6m 37s
	2h 50m 16s

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