This should work in other mods, but team numbers would be totally different, so you will have to adjust this.
Add this function somewhere in code, then use IsValidClient check before GetClientTeam on 38 line
EDIT: we dont want to do IsPlayerAlive check, so comment this out.
PHP Code:
public IsValidClient (client)
{
if (client == 0)
return false;
if (!IsClientConnected(client))
return false;
if (IsFakeClient(client))
return false;
if (!IsClientInGame(client))
return false;
// if (!IsPlayerAlive(client))
// return false;
return true;
}