StreamBuffer : add warning logs in case sliding become negative (this should not happen)
StreamBuffer : add warning logs in case sliding become negative (this should not happen)

hola/flashls,Corey600/flashls,tedconf/flashls,neilrackett/flashls,codex-corp/flashls,fixedmachine/flashls,codex-corp/flashls,thdtjsdn/flashls,neilrackett/flashls,hola/flashls,Corey600/flashls,NicolasSiver/flashls,clappr/flashls,fixedmachine/flashls,vidible/vdb-flashls,jlacivita/flashls,loungelogic/flashls,thdtjsdn/flashls,vidible/vdb-flashls,loungelogic/flashls,mangui/flashls,clappr/flashls,jlacivita/flashls,tedconf/flashls,mangui/flashls,NicolasSiver/flashls