[Bug 734478] shapewipe: Unref caps and element after usage

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=734478
  GStreamer | gst-plugins-good | git

--- Comment #1 from Sebastian Rasmussen <sebras at hotmail.com> 2014-08-08 10:57:27 UTC ---
Created an attachment (id=282898)
 View: https://bugzilla.gnome.org/attachment.cgi?id=282898
 Review: https://bugzilla.gnome.org/review?bug=734478&attachment=282898

Proposed patch fixing leaks.

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