gst/rtsp/gstrtspsrc.c: Fix some more leaks. Fixes #497007.

Original commit message from CVS:
Patch by: Tommi Myöhänen  <ext-tommi dot myohanen at nokia dot com>
* gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_setup_streams):
Fix some more leaks. Fixes #497007.

ChangeLog

+2007-11-15  Wim Taymans  <wim.taymans@gmail.com>
+
+	Patch by: Tommi Myöhänen  <ext-tommi dot myohanen at nokia dot com>
+
+	* gst/rtsp/gstrtspsrc.c: (gst_rtspsrc_setup_streams):
+	Fix some more leaks. Fixes #497007.
+
 2007-11-15  Wim Taymans  <wim.taymans@gmail.com>
 	Patch by: Tommi Myöhänen  <ext-tommi dot myohanen at nokia dot com>

gst/rtsp/gstrtspsrc.c

@@ -3690,6 +3690,9 @@ gst_rtspsrc_setup_streams (GstRTSPSrc * src)
     next:
       /* clean up our transport struct */
       gst_rtsp_transport_init (&transport);
+      /* clean up used RTSP messages */
+      gst_rtsp_message_unset (&request);
+      gst_rtsp_message_unset (&response);
     }
   }