Alexander Alekhin 4760d32937 ffmpeg: fix invalid NULL pointer access
Catched on Ubuntu 12.04 with FFMPEG:
  codec:                     YES (ver 53.35.0)
  format:                    YES (ver 53.21.1)
  util:                      YES (ver 51.22.3)
  swscale:                   YES (ver 2.1.0)
  resample:                  NO
  gentoo-style:              YES
2015-10-05 19:28:35 +03:00
..
2015-09-21 13:44:35 +02:00
2015-07-22 17:54:42 +03:00
2015-09-08 22:42:05 +03:00