should use uintptr_t instead of size_t for pointer size

zend_container.h

@@ -53,7 +53,7 @@ public:
  return Z_OBJ_P(new_object);
  }
  static bitem * fetch_bnode_object_data(zend_object *obj) {
- return (bitem *)(*((size_t *)((char *)obj - sizeof(size_t))));
+ return (bitem *)(*((uintptr_t *)((char *)obj - sizeof(uintptr_t))));
  }
 };