Stateful::save_extra_xml (node);
- if (!set_id (node)) {
- error << _("Controllable state node has no ID property") << endmsg;
- return -1;
- }
+ set_id (node);
if ((prop = node.property (X_("flags"))) != 0) {
_flags = (Flag) string_2_enum (prop->value(), _flags);