ensure emergency switch down works correctly when NetStream is flushed
ensure emergency switch down works correctly when NetStream is flushed

fixedmachine/flashls,hola/flashls,jlacivita/flashls,neilrackett/flashls,NicolasSiver/flashls,codex-corp/flashls,fixedmachine/flashls,vidible/vdb-flashls,codex-corp/flashls,mangui/flashls,jlacivita/flashls,clappr/flashls,vidible/vdb-flashls,hola/flashls,mangui/flashls,clappr/flashls,neilrackett/flashls,tedconf/flashls,tedconf/flashls,NicolasSiver/flashls