Remove some calls to av_free that tured out to be duplicate. This improves the behaviour of ffserver streaming asf files from disk.
Remove some calls to av_free that tured out to be duplicate. This improves
the behaviour of ffserver streaming asf files from disk.


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@662 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg