del234(ssh->channels, c); if (ssh->version == 2) bufchain_clear(&c->v.v2.outbuffer); sfree(c);
static void ssh_do_close(Ssh ssh){    int i;    struct ssh_channel *c;    ssh->state = SSH_STATE_CLOSED;    if (ssh->s) {        sk_close(ssh->s);        ssh->s = NULL;    }    /*     * Now we must shut down any port and X forwardings going     * through this connection.     */    for (i = 0; NULL != (c = index234(ssh->channels, i)); i++) {	switch (c->type) {	  case CHAN_X11:	    x11_close(c->u.x11.s);	    break;	  case CHAN_SOCKDATA:	    pfd_close(c->u.pfd.s);	    break;	}	del234(ssh->channels, c);	if (ssh->version == 2)	    bufchain_clear(&c->v.v2.outbuffer);	sfree(c);    }}