/* remove user from all channels */
while (user->channels.used > 0)
DelChannelUser(user, user->channels.list[user->channels.used-1]->channel, false, 0);
/* remove user from all channels */
while (user->channels.used > 0)
DelChannelUser(user, user->channels.list[user->channels.used-1]->channel, false, 0);