re-did my earlier fix in a safer way

Source/Project64/N64 System/Mips/Memory Class.h

@@ -10,14 +10,7 @@
 ****************************************************************************/
 #pragma once
 
-/*
- * If compiling without ATL included, MSVC could mis-treat `interface` as a
- * built-in keyword, but what we want essentially is a structure.
- */
-//#undef interface
-#ifndef interface
-#define interface       struct
-#endif
+#include <objbase.h>
 
 interface CMipsMemory_CallBack 
 {