[Bug 736926] dshowvideosrc: error if set_caps is called while running

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=736926
  GStreamer | gst-plugins-bad | git

Joshua M. Doe <oss> changed:

           What    |Removed                     |Added
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 Attachment #286533|0                           |1
        is obsolete|                            |

--- Comment #3 from Joshua M. Doe <oss at nvl.army.mil> 2014-09-23 20:50:06 UTC ---
Created an attachment (id=286933)
 View: https://bugzilla.gnome.org/attachment.cgi?id=286933
 Review: https://bugzilla.gnome.org/review?bug=736926&attachment=286933

moved decls up and did this for audiosrc as well

Implemented your suggestions, though my app doesn't use audio so that hasn't
been tested yet.

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