Tests

A bunch of Coverity warnings fixes #295

Job	Run time
Upgrade test (gcc, fuse3, ubuntu-24.04, stable-5.0)	51s
Test suite (x86_64) (gcc, fuse, ubuntu-22.04)	31s
Test suite (aarch64) (gcc, fuse, ubuntu-22.04)	1m 47s
Test suite (x86_64) (gcc, fuse, ubuntu-24.04)	1m 51s
Upgrade test (gcc, fuse3, ubuntu-24.04, stable-6.0)	53s
Test suite (aarch64) (gcc, fuse, ubuntu-24.04)	59s
Test suite (x86_64) (gcc, fuse3, ubuntu-22.04)	30s
Upgrade test (gcc, fuse3, ubuntu-24.04, main)	53s
Test suite (aarch64) (gcc, fuse3, ubuntu-22.04)	1m 47s
Test suite (x86_64) (gcc, fuse3, ubuntu-24.04)	41s
Test suite (aarch64) (gcc, fuse3, ubuntu-24.04)	56s
Test suite (x86_64) (clang, fuse, ubuntu-22.04)	34s
Test suite (aarch64) (clang, fuse, ubuntu-22.04)	1m 54s
Test suite (x86_64) (clang, fuse, ubuntu-24.04)	37s
Test suite (aarch64) (clang, fuse, ubuntu-24.04)	1m 15s
Test suite (x86_64) (clang, fuse3, ubuntu-22.04)	31s
Test suite (aarch64) (clang, fuse3, ubuntu-22.04)	1m 55s
Test suite (x86_64) (clang, fuse3, ubuntu-24.04)	40s
Test suite (aarch64) (clang, fuse3, ubuntu-24.04)	1m 16s
	20m 21s

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