Data should not be flushed out of the tsdemux because a payload unit start indicator (pusi) is seen in a adaptation only ts packet. If the package contains no payload a pusi does not indicate a new PES packet, but PSI information, etc. This fixes playback of several TS files which contain ts packets without payload but with pusi set to 1. https://bugzilla.gnome.org/show_bug.cgi?id=676168