patch 8.1.0941: macros for MS-Windows are inconsistent
Problem: Macros for MS-Windows are inconsistent, using "32", "3264 and
others.
Solution: Use MSWIN for all MS-Windows builds. Use FEAT_GUI_MSWIN for the
GUI build. (Hirohito Higashi, closes #3932)
diff --git a/src/if_python.c b/src/if_python.c
index 3438046..06c46bc 100644
--- a/src/if_python.c
+++ b/src/if_python.c
@@ -35,7 +35,7 @@
# undef _POSIX_THREADS
#endif
-#if defined(_WIN32) && defined(HAVE_FCNTL_H)
+#if defined(MSWIN) && defined(HAVE_FCNTL_H)
# undef HAVE_FCNTL_H
#endif
@@ -127,7 +127,7 @@
# define HINSTANCE long_u /* for generating prototypes */
# endif
-# ifndef WIN3264
+# ifndef MSWIN
# include <dlfcn.h>
# define FARPROC void*
# define HINSTANCE void*