Fix builds on Visual Studio against installed GLib-2.68.x or later
Hi,
From the commit message:
We attempted to return a value in void-return-type functions in both gicallableinfo.c and gitypeinfo.c, so avoid that since that will trigger a C4098 warning on Visual Studio, which is considered an error if we are building against an installed version of GLib 2.68.x or later.
This will fix builds against GLib-2.68.x and later on Visual Studio.
With blessings, thank you!