headers: Add missing _CRTIMP for _fstat64i32/_stat64i32/_wstat64i32 functions

All other _*stat* functions are already marked with _CRTIMP, so add it also for missing 3 functions.

Signed-off-by: Martin Storsjö <martin@martin.st>
diff --git a/mingw-w64-headers/crt/wchar.h b/mingw-w64-headers/crt/wchar.h
index 0ce7593..c72530c 100644
--- a/mingw-w64-headers/crt/wchar.h
+++ b/mingw-w64-headers/crt/wchar.h
@@ -262,7 +262,7 @@
 
   _CRTIMP int __cdecl _wstat32(const wchar_t *_Name,struct _stat32 *_Stat);
   _CRTIMP int __cdecl _wstat32i64(const wchar_t *_Name,struct _stat32i64 *_Stat);
-  int __cdecl _wstat64i32(const wchar_t *_Name,struct _stat64i32 *_Stat);
+  _CRTIMP int __cdecl _wstat64i32(const wchar_t *_Name,struct _stat64i32 *_Stat);
   _CRTIMP int __cdecl _wstat64(const wchar_t *_Name,struct _stat64 *_Stat);
 #endif
 #endif