Fix coverity warnings #987

Job	Run time
Run CodeQL tests	8m 17s
Build on Fedora to fedora:37	2m 51s
Build on macOS for osx	28m 49s
Build on Fedora to fedora:38	2m 41s
Run Coverity tests	3m 39s
Build on macOS for ios	8m 54s
Build on macOS for iossimulator	17m 15s
Deploy pages	0s
Build on macOS for androidarm	7m 56s
Build on macOS for androidarm64	11m 51s
Build on Windows (143)	1h 19m 46s
Build on Ubuntu to ubuntu:20.04	4m 54s
Build on macOS for androidx86_64	8m 33s
Build on Windows (142)	1h 14m 10s
Build on Ubuntu to ubuntu:22.04	5m 48s
Build on Ubuntu to ubuntu:23.04	5m 18s
Build on Ubuntu to ubuntu:23.10	6m 26s
	4h 37m 8s

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