If using UNITY_SUPPORT_64, UNITY_POINTER_WIDTH should default to 64 (not 32).

Fixes failing test cases on 64-bit OSX: pointers to local variables were
being converted to U32s before comparison.

src/unity_internals.h

@@ -72,8 +72,12 @@ typedef _US64 _U_SINT;
 //-------------------------------------------------------
 
 #ifndef UNITY_POINTER_WIDTH
+#ifdef UNITY_SUPPORT_64
+#define UNITY_POINTER_WIDTH (64)
+#else
 #define UNITY_POINTER_WIDTH (32)
 #endif
+#endif /* UNITY_POINTER_WIDTH */
 
 #if (UNITY_POINTER_WIDTH == 32)
     typedef _UU32 _UP;