gst/interleave/interleave.c (interleave_buffered_loop): Always push only when channel...

gst/interleave/interleave.c (interleave_buffered_loop): Always push only when channel->buffer is NULL. Prevents segfa...

Original commit message from CVS:
2004-02-25  Andy Wingo  <wingo@pobox.com>

* gst/interleave/interleave.c (interleave_buffered_loop): Always
push only when channel->buffer is NULL. Prevents segfaults doing
the state change after a nonlocal exit, like a scheme exception.

* gst/audioconvert/gstaudioconvert.c (gst_audio_convert_getcaps):
Handle the case where the intersected caps is empty.