gst/avi/gstavidemux.c: this patch combines the global init_frames with the stream init_frames. Rationale being that t...

Original commit message from CVS:
* gst/avi/gstavidemux.c: (gst_avi_demux_parse_index),
(gst_avi_demux_stream_index), (gst_avi_demux_stream_scan),
(gst_avi_demux_massage_index), (gst_avi_demux_handle_seek):
this patch combines the global init_frames with the stream
init_frames. Rationale being that the global delay should
be subtracted from any stream delay.
Fixes #335858.