Comment 5 for bug 120331

Backtrace:

#0 rtsp_ext_wms_configure_stream (ctx=0x80ee190, stream=0x85b9300) at rtspextwms.c:158
#1 0xb2ce9fda in gst_rtspsrc_open (src=0x85a0000) at gstrtspsrc.c:1775
#2 0xb2cecd15 in gst_rtspsrc_change_state (element=0x85a0000, transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstrtspsrc.c:2208
#3 0xb74854ba in gst_element_change_state (element=0x85a0000, transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstelement.c:2291
#4 0xb74855a2 in gst_element_change_state (element=0x85a0000, transition=GST_STATE_CHANGE_NULL_TO_READY)
    at gstelement.c:2324
#5 0xb7488423 in gst_element_set_state_func (element=0x85a0000, state=GST_STATE_PAUSED) at gstelement.c:2252
#6 0xb74846a3 in gst_element_set_state (element=0x85a0000, state=GST_STATE_PAUSED) at gstelement.c:2160
#7 0xb7479502 in gst_bin_change_state_func (element=0x8563070, transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstbin.c:1767
#8 0xb74a3a87 in gst_pipeline_change_state (element=0x8563070, transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstpipeline.c:499
#9 0xb4b58828 in gst_play_base_bin_change_state (element=0x8563070, transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstplaybasebin.c:2559
#10 0xb4b502bd in gst_play_bin_change_state (element=0x8563070, transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstplaybin.c:1900
#11 0xb74854ba in gst_element_change_state (element=0x8563070, transition=GST_STATE_CHANGE_READY_TO_PAUSED)
    at gstelement.c:2291
#12 0xb74855a2 in gst_element_change_state (element=0x8563070, transition=GST_STATE_CHANGE_NULL_TO_READY)
    at gstelement.c:2324
#13 0xb7488423 in gst_element_set_state_func (element=0x8563070, state=GST_STATE_PAUSED) at gstelement.c:2252
#14 0xb74846a3 in gst_element_set_state (element=0x8563070, state=GST_STATE_PAUSED) at gstelement.c:2160
#15 0x080808f4 in bacon_video_widget_open_with_subtitle ()
#16 0x0805ef26 in totem_action_set_mrl_with_warning ()
#17 0x0805f4d0 in totem_action_set_mrl ()
#18 0x0805fab9 in totem_action_set_mrl_and_play ()
#19 0x080601d0 in totem_action_play_pause ()