_fetch_close
int _fetch_close(conn_t *);
_fetch_close(conn);
_fetch_close(conn);
_fetch_close(io->dconn);
_fetch_close(io->cconn);
_fetch_close(conn);
_fetch_close(conn);
_fetch_close(conn);
r = _fetch_close(io->conn);
_fetch_close(conn);