Fix coverity warnings #411

Job	Run time
Build on macOS for iphoneos	4m 17s
Run CodeQL tests	5m 18s
Build on Ubuntu for androidx86_64	8m 7s
Build on Ubuntu for androidarm	7m 45s
Build on Ubuntu 24.04 arm64	2m 22s
Build on macOS for macos	1m 11s
Build on Ubuntu 22.04 amd64	2m 18s
Build on Ubuntu for androidarm64	8m 22s
Build on Ubuntu 24.04 amd64	2m 16s
Build on Ubuntu 22.04 arm64	2m 45s
Build on Windows (windows-2025, x64)	17m 23s
Build on Ubuntu 25.04 amd64	2m 34s
Build on macOS for iphonesimulator	3m 59s
Build on Ubuntu 25.04 arm64	2m 43s
Build on Windows (windows-2025, arm64)	16m 3s
Run Coverity tests	0s
Deploy pages	0s
	1h 27m 23s

Provide feedback