It was introduced after changing input parameter and overlooked during review process. Originally committed as revision 13112 to svn://svn.ffmpeg.org/ffmpeg/trunk
This will allow to reuse the code in the SIPR decoder. Originally committed as revision 13108 to svn://svn.ffmpeg.org/ffmpeg/trunk
Originally committed as revision 12978 to svn://svn.ffmpeg.org/ffmpeg/trunk