mxf utils: add missing array delete
mxf utils: add missing array delete

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