[Bug 670197] webcam not work due to non-fatal error

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=670197
  GStreamer | gst-plugins-good | 0.10.30

--- Comment #1 from Gary Ching-Pang Lin <glin at suse.com> 2012-02-16 09:24:10 UTC ---
Created an attachment (id=207738)
 View: https://bugzilla.gnome.org/attachment.cgi?id=207738
 Review: https://bugzilla.gnome.org/review?bug=670197&attachment=207738

Turn the non-fatal errors into warnings

This patch treats the error from the query for the control attribute as
warning. It works for me, but I am not sure if this would be intrusive or not.

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