[Bug 723554] request for "stats" property of "payX" pipeline element may raise GLib warning

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=723554
  GStreamer | gst-rtsp-server | git

--- Comment #1 from Andrey Utkin <me at andrey-utkin.pp.ua> 2014-02-03 20:05:39 UTC ---
And when G_DEBUG is unset, this may result in crash:

GLib-GObject-WARNING **: g_object_get_valist: object class 'GstIdentity' has no
property named 'stats'
*** glibc detected *** appname: free(): invalid pointer: 0x0000000000ad4a50 ***

The reason is probably there:

GstStructure *stats;
...
g_object_get (priv->payloader, "stats", &stats, NULL);
if (stats == NULL)
  goto no_stats;

stats is not initialized to NULL, but checked against it. I guess g_object_set
() does not modify/init it in any way, thus we check uninitialized value
against NULL, which doesn't work.

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