ext/ffmpeg/gstffmpegdec.c: My previous commit was not completly correct.. I've disabled our _get_buffer function unti...

Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_get_buffer):
My previous commit was not completly correct.. I've disabled
our _get_buffer function until we make it work 100%. I've opened a bug
(#321662) for this issue.