Jun Zhao b99ed6e428 cmdutils: fix crash if no name for "ffmpeg -h protocol"
fix crash when used the command like:
- ffmpeg -h protocol
- ffmpeg -h protocol=

Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
2020-01-30 12:50:22 -03:00
..