as11: fix commit 0ae15ad2 and avoid zero length filler in segm track
as11: fix commit 0ae15ad2 and avoid zero length filler in segm track

ebu/ebu-bmx,Limecraft/ebu-bmx,kierank/bmxlib-bmx,xunchangguo/BMX,stuarthicks/bmx,kierank/bmxlib-bmx,xunchangguo/BMX,stuarthicks/bmx,kierank/bmxlib-bmx,stuarthicks/bmx,Limecraft/ebu-bmx,ebu/ebu-bmx,xunchangguo/BMX,Limecraft/ebu-bmx,ebu/ebu-bmx