Fix channels being unnecessarily recycled on disconnect
Fix channels being unnecessarily recycled on disconnect

Resolves #768
ppy/osu,johnneijzen/osu,DrabWeb/osu,DrabWeb/osu,ZLima12/osu,peppy/osu,ZLima12/osu,2yangk23/osu,NeoAdonis/osu,UselessToucan/osu,Drezi126/osu,UselessToucan/osu,ppy/osu,smoogipoo/osu,johnneijzen/osu,2yangk23/osu,smoogipoo/osu,EVAST9919/osu,smoogipoo/osu,NeoAdonis/osu,naoey/osu,UselessToucan/osu,tacchinotacchi/osu,osu-RP/osu-RP,peppy/osu,smoogipooo/osu,naoey/osu,NeoAdonis/osu,Nabile-Rahmani/osu,naoey/osu,peppy/osu,DrabWeb/osu,Frontear/osuKyzer,EVAST9919/osu,ppy/osu,Damnae/osu,peppy/osu-new