Repair kvssink unit tests and CI #867

Job	Run time
linux-gcc-code-coverage	9m 41s
mac-os-build-clang	9m 39s
mac-os-build-gcc	9m 38s
address-sanitizer	9m 38s
arm32-cross-compilation	9m 1s
arm64-cross-compilation	8m 31s
linux-aarch64-cross-compilation	8m 37s
ubuntu-gcc	9m 40s
undefined-behavior-sanitizer	9m 39s
windows-msvc	9m 26s
linux-build-gcc-shared	1m 18s
linux-build-gcc-static	8m 54s
	1h 43m 42s

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