Merge pull request #722 from imaami/fix-json_tokener_new_ex-use-after…

…-free

Fix use-after-free in json_tokener_new_ex()

json_tokener.c

@@ -164,8 +164,8 @@ struct json_tokener *json_tokener_new_ex(int depth)
 	tok->pb = printbuf_new();
 	if (!tok->pb)
 	{
-		free(tok);
 		free(tok->stack);
+		free(tok);
 		return NULL;
 	}
 	tok->max_depth = depth;