Fix coverity warnings #990

Job	Run time
Run CodeQL tests	9m 22s
Build on macOS for osx	9m 15s
Run Coverity tests	4m 30s
Build on Fedora to fedora:37	2m 55s
Build on macOS for ios	2m 19s
Build on Fedora to fedora:38	3m 38s
Deploy pages	0s
Build on macOS for iossimulator	4m 46s
Build on macOS for androidarm	3m 40s
Build on Ubuntu to ubuntu:20.04	4m 37s
Build on macOS for androidarm64	2m 37s
Build on Ubuntu to ubuntu:22.04	5m 39s
Build on Windows (143)	20m 25s
Build on macOS for androidx86_64	2m 35s
Build on Windows (142)	19m 2s
Build on Ubuntu to ubuntu:23.04	5m 28s
Build on Ubuntu to ubuntu:23.10	4m 45s
	1h 45m 33s

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