gst/playback/gstdecodebin2.c: Dont leak ghostpad. Fixes #475451.

Original commit message from CVS:
* gst/playback/gstdecodebin2.c:
Dont leak ghostpad. Fixes #475451.

ChangeLog

+2007-11-09  Stefan Kost  <ensonic@users.sf.net>
+
+	* gst/playback/gstdecodebin2.c:
+	  Dont leak ghostpad. Fixes #475451.
+
 2007-11-09  Wim Taymans  <wim.taymans@gmail.com>
 	* docs/design/design-decodebin.txt:

gst/playback/gstdecodebin2.c

@@ -2097,6 +2097,16 @@ gst_decode_group_free (GstDecodeGroup * group)
   GST_LOG ("group %p", group);
 
   GROUP_MUTEX_LOCK (group);
+
+  /* free ghost pads */
+  if (group == group->dbin->activegroup) {
+    for (tmp = group->ghosts; tmp; tmp = g_list_next (tmp))
+      gst_element_remove_pad (GST_ELEMENT (group->dbin), (GstPad *) tmp->data);
+
+    g_list_free (group->ghosts);
+    group->ghosts = NULL;
+  }
+
   /* Clear all GstDecodePad */
   for (tmp = group->endpads; tmp; tmp = g_list_next (tmp)) {
     GstDecodePad *dpad = (GstDecodePad *) tmp->data;