Use fewer TO_ORIGIN_CIRCUIT casts in getinfo_helper_events

{

  (void) control_conn;

  if (!strcmp(question, "circuit-status")) {

    circuit_t *circ;

    circuit_t *circ_;

    smartlist_t *status = smartlist_create();

    for (circ = _circuit_get_global_list(); circ; circ = circ->next) {

    for (circ_ = _circuit_get_global_list(); circ_; circ_ = circ_->next) {

      origin_circuit_t *circ;

      char *s, *circdesc;

      size_t slen;

      const char *state;

      if (! CIRCUIT_IS_ORIGIN(circ) || circ->marked_for_close)

      if (! CIRCUIT_IS_ORIGIN(circ_) || circ_->marked_for_close)

        continue;

      circ = TO_ORIGIN_CIRCUIT(circ_);

      if (circ->state == CIRCUIT_STATE_OPEN)

      if (circ->_base.state == CIRCUIT_STATE_OPEN)

        state = "BUILT";

      else if (TO_ORIGIN_CIRCUIT(circ)->cpath)

      else if (circ->cpath)

        state = "EXTENDED";

      else

        state = "LAUNCHED";

      circdesc = circuit_describe_status_for_controller(

        TO_ORIGIN_CIRCUIT(circ));

      circdesc = circuit_describe_status_for_controller(circ);

      slen = strlen(circdesc)+strlen(state)+30;

      s = tor_malloc(slen+1);

      tor_snprintf(s, slen, "%lu %s%s%s",

                   (unsigned long)TO_ORIGIN_CIRCUIT(circ)->global_identifier,

                   (unsigned long)circ->global_identifier,

                   state, *circdesc ? " " : "", circdesc);

      smartlist_add(status, s);

      tor_free(circdesc);