FIX: Flatten the queue before shuffle to avoid wried things

src/database/queue.c

@@ -878,6 +878,7 @@ database_queue_shuffle(lkt_db *db)
                       "DELETE FROM queue_tmp;"
                       "DELETE FROM sqlite_sequence WHERE name = 'queue_tmp';"
                       "COMMIT;";
+    database_queue_flat(db);
     SQLITE_EXEC(db, SQL, error);
     return true;
 error: