Merge pull request #4781 from guybe7/block_list_notify

Make blocking list commands send keyspace notifications

src/blocked.c

@@ -283,6 +283,7 @@ void handleClientsBlockedOnKeys(void) {
 
                 if (listTypeLength(o) == 0) {
                     dbDelete(rl->db,rl->key);
+                    notifyKeyspaceEvent(NOTIFY_GENERIC,"del",rl->key,rl->db->id);
                 }
                 /* We don't call signalModifiedKey() as it was already called
                  * when an element was pushed on the list. */