Eliminate duplication of the check for the MS_WINDOWS macro.

[nybblista]

I think there is no need to check for MS_WINDOWS macro twice here.

cpython/Python/pythonrun.c

Lines 34 to 43 in bbcb75c

	#ifdef MS_WINDOWS
	# include "malloc.h" // alloca()
	#endif
	#ifdef MS_WINDOWS
	# undef BYTE
	# include "windows.h"
	#endif

Linked PRs

• gh-138206: Eliminate duplication of the check for the MS_WINDOWS macro. #138207