Fix a few 64bit compiler warnings

  size_t link_len, id_len;

  var_cell_t *cell;

  size_t cell_len;

  int pos;

  ssize_t pos;

  int server_mode;

  tor_assert(conn->_base.state == OR_CONN_STATE_OR_HANDSHAKING_V3);

 *

 * If <b>server</b> is false and <b>signing_key</b> is provided, calculate the

 * entire authenticator, signed with <b>signing_key</b>.

 * DOCDOC return value

 */

int

connection_or_compute_authenticate_cell_body(or_connection_t *conn,

  tor_assert(ptr - out == V3_AUTH_FIXED_PART_LEN);

  if (server)

    return ptr-out;

    return V3_AUTH_FIXED_PART_LEN; // ptr-out

  /* Time: 8 octets. */

  {

  tor_assert(ptr - out == V3_AUTH_BODY_LEN);

  if (!signing_key)

    return ptr - out;

    return V3_AUTH_BODY_LEN; // ptr - out

  {

    int siglen;

    ptr += siglen;

    tor_assert(ptr <= out+outlen);

    return ptr - out;

    return (int)(ptr - out);

  }

}

  var_cell_t *cell;

  crypto_pk_env_t *pk = tor_tls_get_my_client_auth_key();

  int authlen;

  int cell_maxlen;

  size_t cell_maxlen;

  /* XXXX make sure we're actually supposed to send this! */

  if (!pk) {