avformat/oggparsedaala: Check duration for AV_NOPTS_VALUE

This avoids an integer overflow
the solution matches oggparsevorbis.c and 45581ed1

Fixes: 700242

Found-by: Thomas Guilbert <tguilbert@google.com>
Reviewed-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>