'wmain' is only used if 'WIN32' is defined

[glebov-andrey]

Hi!
There appears to be a leftover WIN32 macro check after #193 and #1676.

Catch2/include/internal/catch_default_main.hpp

Lines 15 to 17 in 2d172dc

	#if defined(CATCH_CONFIG_WCHAR) && defined(WIN32) && defined(_UNICODE) && !defined(DO_NOT_USE_WMAIN)
	// Standard C/C++ Win32 Unicode wmain entry point
	extern "C" int wmain (int argc, wchar_t * argv[], wchar_t * []) {

Because of this one has to resort to manually defining WIN32 (if _WIN32 is defined) before including catch.hpp in main.cpp.
Presumably the correct thing would be to check CATCH_PLATFORM_WINDOWS instead.
As far as I can tell this is the only remaining use of WIN32 in Catch2.

[horenmar]

Thanks