[Bug 709814] [examples/overlay] avoid to unref sink if not found. Also fix logic to find a sink in one of the example.

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=709814
  GStreamer | gst-plugins-base | git

Tim-Philipp Müller <t.i.m> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |t.i.m at zen.co.uk
   Target Milestone|HEAD                        |1.3.1

--- Comment #5 from Tim-Philipp Müller <t.i.m at zen.co.uk> 2013-10-11 21:31:35 UTC ---
Please try to add bugzilla links (or bug numbers) to commit messages, and set
the target milestone to the next stable release which will contain the fix (or
next dev release if only pushed to master). Thanks!

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