[Windows] Fix several build warnings #4824

Job	Run time
libs-build	5m 43s
apps-build	9m 52s
libs-cmake-build	8m 15s
client-armv6-build	3m 14s
client-arm-build	3m 34s
client-arm64-build	3m 22s
client-x86-build	3m 8s
client-x86_64-build	3m 5s
manager-build (assembleRelease)	4m 46s
manager-build (assembleXiaomi_release)	4m 48s
manager-build (assembleArmv6_release)	4m 51s
manager-build (jacocoTestReportDebug)	6m 41s
	1h 1m 19s

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