oggdemux: don't seek when no current chain

Avoid a crash when we try to seek when there is no current chain.

diff --git a/ext/ogg/gstoggdemux.c b/ext/ogg/gstoggdemux.c
index e41d04f..c29e0e4 100644 (file)
--- a/ext/ogg/gstoggdemux.c
+++ b/ext/ogg/gstoggdemux.c
@@ -2384,6 +2384,8 @@ gst_ogg_demux_perform_seek_push (GstOggDemux * ogg, GstEvent * event)
   }
 
   chain = ogg->current_chain;
+  if (!chain)
+    return FALSE;
 
   if (do_index_search (ogg, chain, 0, -1, 0, -1, start, &best, &best_time)) {
     /* the index gave some result */