Avoid collision with MinGW wctype_t

reactos/ntoskrnl/include/internal

diff -u -r1.3 -r1.4
--- ctype.h	30 Dec 2003 18:52:04 -0000	1.3
+++ ctype.h	16 Aug 2004 20:02:23 -0000	1.4
@@ -22,7 +22,10 @@

 
 #define _ALPHA      0x0103
 

+#ifndef _WCTYPE_T_DEFINED

 typedef wchar_t wctype_t;

+#define _WCTYPE_T_DEFINED
+#endif

 
 
 #if defined(_MSC_VER)