mxfdemux: Set stream tags to NULL after unreffing

Otherwise we might try to unref them a second time a little bit later.

https://bugzilla.gnome.org/show_bug.cgi?id=777503

diff --git a/gst/mxf/mxfdemux.c b/gst/mxf/mxfdemux.c
index a380f6dd9bb7c48e86f2a720c4c5f6dfce978c65..54ceec1df08584cc84d256029edcd5d095066bc0 100644 (file)
--- a/gst/mxf/mxfdemux.c
+++ b/gst/mxf/mxfdemux.c
@@ -835,6 +835,7 @@ gst_mxf_demux_update_essence_tracks (GstMXFDemux * demux)
         etrack->mapping_data = NULL;
         if (etrack->tags)
           gst_tag_list_unref (etrack->tags);
+        etrack->tags = NULL;
         goto next;
       } else if (!caps) {
         GST_WARNING_OBJECT (demux, "Couldn't create updated caps for stream");