Cleanup.

examples/07-callback/callback.cpp

@@ -279,7 +279,7 @@ public:
 
 		if (kNaturalAlignment >= _align)
 		{
-			intptr_t _ptrOld = (intptr_t) _ptr;
+			intptr_t _ptrOld = intptr_t(_ptr);
 			void* ptr = ::realloc(_ptr, _size);
 			bx::debugPrintf("%s(%d): REALLOC %p (old %p) of %d byte(s)\n", _file, _line, ptr, _ptrOld, _size);