fix segfault if metadump client goes away

missing else branch caused the first slab class to hit a closed client to
terminate, but didn't kill the run and the next slab class would try to print
to the missing client.

1 files changed, 3 insertions, 0 deletions

diff --git a/crawler.c b/crawler.c
index 246c70c..d0e635c 100644
--- a/crawler.c
+++ b/crawler.c
@@ -344,6 +344,9 @@ static void *item_crawler_thread(void *arg) {
                     lru_crawler_class_done(i);
                     continue;
                 }
+            } else if (active_crawler_mod.mod->needs_client) {
+                lru_crawler_class_done(i);
+                continue;
             }
             pthread_mutex_lock(&lru_locks[i]);
             search = do_item_crawl_q((item *)&crawlers[i]);