[Bug 732744] configure: fix unitialized variables with --disable-external

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=732744
  GStreamer | gst-plugins-bad | git

--- Comment #1 from Matthieu Bouron <matthieu.bouron at collabora.com> 2014-07-04 15:57:35 UTC ---
Created an attachment (id=279920)
 View: https://bugzilla.gnome.org/attachment.cgi?id=279920
 Review: https://bugzilla.gnome.org/review?bug=732744&attachment=279920

configure: fix uninitialized variables with --disable-external

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