fuzz: msan fixes #1042

Job	Run time
build on fedora:39	1m 55s
Build dist with Linux	43s
build on fedora:40	1m 58s
build on ubuntu:24.04	1m 55s
build on ubuntu:23.10	1m 27s
build on ubuntu:22.04	1m 41s
build on ubuntu:20.04	1m 21s
build on debian:12	1m 26s
build on debian:11	1m 33s
Build MacOS release (macos-14-large, amd)	1m 28s
Build Windows release (windows-latest, x86)	10m 3s
Build MacOS release (macos-latest-xlarge, arm)	53s
Build Windows release (windows-latest, x64)	9m 49s
	36m 12s

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