free moov and cmov when error occurs, fix memleak, patch by Albert Astals Cid, aastals at tv-wan dot es
free moov and cmov when error occurs, fix memleak, patch by Albert Astals Cid, aastals at tv-wan dot es

git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@13237 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

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