dashdemux: avoid an assertion when stopping the pipeline

Avoids asserting when dataqueues are setting to flushing due
to a pipeline stop during a pad switch.

diff --git a/ext/dash/gstdashdemux.c b/ext/dash/gstdashdemux.c
index ea3ecbe..24d4fb2 100644 (file)
--- a/ext/dash/gstdashdemux.c
+++ b/ext/dash/gstdashdemux.c
@@ -983,6 +983,10 @@ switch_pads (GstDashDemux * demux)
     GstCaps *caps = NULL;
 
     if (!gst_data_queue_pop (stream->queue, &item)) {
+      if (demux->cancelled) {
+        g_slist_free (oldpads);
+        return;
+      }
       g_assert_not_reached ();
     }