!plist_has_value(rss_irn->consumer_list, consumer)) {
plist_insert_back(rss_irn->consumer_list, consumer);
DBG((rss->dbg, LEVEL_2, "\t\tconsumer %+F\n", consumer));
!plist_has_value(rss_irn->consumer_list, consumer)) {
plist_insert_back(rss_irn->consumer_list, consumer);
DBG((rss->dbg, LEVEL_2, "\t\tconsumer %+F\n", consumer));