use explicit integer bit widths for windows GUID

The size of a GUID is not platform-dependent, it's always a fixed number of bits.  So I've updated guid to use fixed bit integer types rather than platform-dependent C integer types.
2fc2d88fc6Jonathan Marler committed on 1/24/2022, 3:35:15 PM· committed by Veikka Tuominenparentda8d4d9
1 file changedLine totals unavailable