[XDK] winnt_old.h: Fix definition of __WINE_MALLOC / __WINE_DEALLOC

This is to prevent redefinition warnings when including wine's corecrt.h
The additional !defined(malloc) prevents errors when compiling libwine, which defines malloc to libwine_malloc.

Author: tkreuzer

sdk/include/xdk/winnt_old.h

@@ -83,8 +83,16 @@
 #else
 # define __WINE_ALLOC_SIZE(...)
 #endif
+#if defined(__GNUC__) && (__GNUC__ > 10) && !defined(malloc)
+#define __WINE_DEALLOC(...) __attribute__((malloc (__VA_ARGS__)))
+#else
 #define __WINE_DEALLOC(...)
+#endif
+#if defined(__GNUC__) && (__GNUC__ > 2) && !defined(malloc)
+#define __WINE_MALLOC __attribute__((malloc))
+#else
 #define __WINE_MALLOC
+#endif
 /*#endif*/
 
 #ifdef __GNUC__