File mingw-w64-v13.0.0-nullptr_t.patch of Package mingw64-headers

diff -ru mingw-w64-v13.0.0.orig/mingw-w64-headers/crt/stddef.h mingw-w64-v13.0.0/mingw-w64-headers/crt/stddef.h
--- mingw-w64-v13.0.0.orig/mingw-w64-headers/crt/stddef.h	2025-06-04 07:00:28.000000000 +0200
+++ mingw-w64-v13.0.0/mingw-w64-headers/crt/stddef.h	2025-10-20 12:34:02.963832278 +0200
@@ -428,6 +428,10 @@
 #endif
 #endif /* C11 or C++11.  */
 
+#if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 202311L)
+typedef typeof(nullptr) nullptr_t;
+#endif
+
 #endif /* _STDDEF_H was defined this time.  */
 
 #endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__