Fix ClientChatEnter handler
Fix ClientChatEnter handler

Member count is now part of the body (see
SteamRE/SteamKit@8f5196baa3ad82a23adff2c9eff2d28759d97b62).

fikusas/node-steam,Latule/node-steam,Drooids/node-steam,Setibi/node-steam,paralin/node-steam,GoeGaming/node-steam,DoctorMcKay/node-steam,seishun/node-steam,keiosweb/node-steam