Suppress warnings of MinGW64 toolchain
Suppress warnings of MinGW64 toolchain

test1943/ShadowVPN,bjrara/ShadowVPN,noikiy/ShadowVPN,test1943/ShadowVPN,sunclx/ShadowVPN,froggatt/ShadowVPN,sunclx/ShadowVPN,froggatt/ShadowVPN,bjrara/ShadowVPN,noikiy/ShadowVPN