get a CRC error, better to just reset the state-.
 * demux.c: Fix a major bug when handling a TS with a section begginning
   in the middle of the packet.


git-svn-id: svn://svn.videolan.org/dvblast/trunk@159 55d3f8b6-4a41-4d2d-a900-313d1436a5b8