message: add function guard to gst_message_set_buffering_stats()

https://bugzilla.gnome.org/show_bug.cgi?id=760704

diff --git a/gst/gstmessage.c b/gst/gstmessage.c
index 5e530b7..066635d 100644 (file)
--- a/gst/gstmessage.c
+++ b/gst/gstmessage.c
@@ -1060,6 +1060,7 @@ void
 gst_message_set_buffering_stats (GstMessage * message, GstBufferingMode mode,
     gint avg_in, gint avg_out, gint64 buffering_left)
 {
+  g_return_if_fail (GST_IS_MESSAGE (message));
   g_return_if_fail (GST_MESSAGE_TYPE (message) == GST_MESSAGE_BUFFERING);
 
   gst_structure_id_set (GST_MESSAGE_STRUCTURE (message),