[Pidgin] #15499: Segfault in gst_v4l2_buffer_pool_process when establishing a video call with gstreamer-1.0

[Pidgin]

#15499: Segfault in gst_v4l2_buffer_pool_process when establishing a video call
with gstreamer-1.0
--------------------+-----------------------------
 Reporter:  laney   |      Owner:  Maiku
     Type:  defect  |     Status:  new
Milestone:          |  Component:  Voice and Video
  Version:          |   Keywords:
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 For Ubuntu 13.04 we're transitioning to GStreamer 1.0 by default. To that
 end, I tried Pidgin's 1.0 port by compiling the hg master branch.

 Pidgin segfaults when a video call comes in. I'm attaching a backtrace of
 all threads and a --debug log (the end of). Thread 21 is the interesting
 one.

 To reproduce I just connect (to GTalk) and, from another device, try to
 video call the account. Pidgin immediately crashes.

 I noticed that the test video widget in preferences does show me a video
 of my lovely face, however.

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Ticket URL: <https://developer.pidgin.im/ticket/15499>
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