launch/config: warn on unknown elements
Now that we support all known elements, warn loudly if we see unknown
elements in any configuration file.
@@ -858,6 +858,7 @@ static void config_parser_begin_fn(void *userdata, const XML_Char *name, const X
goto failed;
} else {
+ CONFIG_ERR(state, "Unknown element", ": %s", name);
goto failed;
}
