Update btQuickprof.cpp

src/LinearMath/btQuickprof.cpp

@@ -44,8 +44,8 @@ static btClock gProfileClock;
 #else //_XBOX
 	#include <windows.h>
 
-#if WINVER < 0x0602
-ULONGLONG GetTickCount64() { return GetTickCount(); }
+#if WINVER <0x0602
+#define GetTickCount64 GetTickCount
 #endif
 
 #endif //_XBOX