Various fixes to silence warnings on Windows #3226

Job	Run time
unit-tests-single / run (ubuntu-latest)	6s
unit-tests-single / run (macos-latest)	12s
check-labels / check	2s
build-trace-tools / run (ubuntu-latest)	2s
build-rti / native-build (ubuntu-latest)	7s
build-trace-tools / run (macos-latest)	8s
fetch-lf / extract-ref	4s
build-rti / native-build (macos-latest)	10s
build-trace-tools / run (windows-latest)	23s
build-rti / native-build (windows-latest)	13s
unit-tests-multi / run (ubuntu-latest)	7s
build-rti / docker-build	1m 21s
unit-tests-multi / run (macos-latest)	11s
lf-default-zephyr / zephyr-tests	51m 21s
lf-default-arduino / arduino-tests (ubuntu-latest)	5m 18s
lf-default-arduino / arduino-tests (macos-latest)	6m 28s
lf-default-flexpret / flexpret-tests	16m 36s
lf-default / regular-tests (ubuntu-latest)	10m 4s
lf-python / regular-tests (ubuntu-latest)	10m 15s
lf-default / regular-tests (macos-latest)	10m 5s
lf-python / regular-tests (macos-latest)	10m 11s
lf-default / regular-tests (windows-latest)	9m 40s
lf-python / regular-tests (windows-latest)	9m 49s
lf-adaptive / regular-tests (ubuntu-latest)	10m 9s
lf-adaptive / regular-tests (macos-latest)	10m 7s
lf-adaptive / regular-tests (windows-latest)	9m 38s
lf-gedf-np / regular-tests (ubuntu-latest)	11m 40s
lf-gedf-np / regular-tests (macos-latest)	11m 39s
lf-gedf-np / regular-tests (windows-latest)	9m 2s
	3h 25m 8s

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