Do not write junk in the end of truncated files. FATE  ra144 test will probably need to be updated.
Do not write junk in the end of truncated files. FATE 
ra144 test will probably need to be updated.


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@13839 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

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