codecparsers: vc1: fix PTYPE for interlaced frames.
Coverity found missing break in parse_frame_header_advanced() when determining PTYPE from FPTYPE for interlaced streams. https://bugzilla.gnome.org/show_bug.cgi?id=688626 Signed-off-by:Gwenole Beauchesne <gwenole.beauchesne@intel.com> (cherry picked from commit e179a6b4)