Fix coverity warnings #991

Job	Run time
Build on Fedora to fedora:37	2m 42s
Build on Fedora to fedora:38	2m 53s
Build on macOS for osx	6m 33s
Build on Ubuntu to ubuntu:20.04	5m 30s
Build on macOS for ios	2m 19s
Build on Ubuntu to ubuntu:22.04	4m 51s
Build on macOS for iossimulator	5m 52s
Build on Ubuntu to ubuntu:23.04	6m 42s
Build on Windows (143)	20m 53s
Build on macOS for androidarm	2m 53s
Build on Ubuntu to ubuntu:23.10	6m 39s
Build on macOS for androidarm64	3m 23s
Build on Windows (142)	23m 2s
Run CodeQL tests	7m 28s
Build on macOS for androidx86_64	3m 40s
Deploy pages	0s
Run Coverity tests	0s
	1h 45m 20s

Provide feedback