void disconnectSlaves(void) {
    listIter li;
    listNode *ln;
    listRewind(server.slaves,&li);
    while((ln = listNext(&li))) {
        freeClient((client*)ln->value);
    }
}
void disconnectSlaves(void) {
    listIter li;
    listNode *ln;
    listRewind(server.slaves,&li);
    while((ln = listNext(&li))) {
        freeClient((client*)ln->value);
    }
}