Do not set non_interleaved for DV-in-AVI.
It does not make sense (DV is interleaved by design) and
it avoids a crash when the non-interleaved code tries to
use the priv_data of streams created by the DV demuxer.
The crash could be avoided differently, but then that stream
would still lack an index and would not play correctly in
Fixes e.g. samples/ffmpeg-bugs/roundup/issue1514/Dennis0002_video1.avi