Update test_deep_copy.c

tests/test_deep_copy.c

@@ -85,7 +85,7 @@ int my_custom_serializer(struct json_object *jso, struct printbuf *pb, int level
 	return 0;
 }
 
-json_c_shallow_copy_fn my_shallow_copy;
+//json_c_shallow_copy_fn my_shallow_copy;
 int my_shallow_copy(json_object *src, json_object *parent, const char *key, size_t index, json_object **dst)
 {
 	int rc;