avcodec/rl2: clear freed pointers

Avoid leaving stale pointers in memory

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/snow: clear freed pointers

Avoid leaving stale pointers in memory

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/roqvideoenc: clear freed pointers

Avoid leaving stale pointers in memory

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
ffserver: drop pointless explicit !=0 checks

Signed-off-by: Reynaldo H. Verdejo Pinochet <reynaldo@osg.samsung.com>
ffserver_config: do not store preset name

Preset are translated to AVOptions.
It is not required to reparse anymore.

Fixes CID #1254667

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>
ffserver_config: fix possible crash

Fixes CID #1254662

Signed-off-by: Lukasz Marek <lukasz.m.luki2@gmail.com>