Build

Fix a Y2038 bug by replacing Int32x32To64 with regular multiplication #532

Job	Run time
Check code style with Uncrustify	22s
gcc-mingw - mingw64	55s
msvc - x86	4m 46s
gcc-mingw - mingw	50s
msvc - x86 - ovpn3	2m 15s
msvc - x64	2m 12s
msvc - x64 - ovpn3	2m 13s
msvc - arm64	2m 13s
msvc - arm64 - ovpn3	2m 14s
msvc - x64 ASAN	3m 12s
	21m 12s

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