video-texture: Put the object in idle mode on error
video-texture: Put the object in idle mode on error

Don't display the last frame on error, but the idle material instead.

ystreet/clutter-gst,lubosz/clutter-gst,GNOME/clutter-gst,skinkie/clutter-gst,GNOME/clutter-gst,skinkie/clutter-gst,skinkie/clutter-gst,lubosz/clutter-gst,GNOME/clutter-gst,lubosz/clutter-gst,ystreet/clutter-gst,ystreet/clutter-gst,ystreet/clutter-gst,GNOME/clutter-gst