dns: fix failed lookup reporting.
dns: fix failed lookup reporting.

dbaxa/pgbouncer,kvap/pgbouncer,jaiminpan/pgbouncer,digoal/pgbouncer-x2,digoal/pgbouncer-x2,wurenny/pgbouncer-x2,dbaxa/pgbouncer,jaiminpan/pgbouncer,jaiminpan/pgbouncer,digoal/pgbouncer-x2,kvap/pgbouncer,jaiminpan/pgbouncer,digoal/pgbouncer-x2,dbaxa/pgbouncer,wurenny/pgbouncer-x2,wurenny/pgbouncer-x2,wurenny/pgbouncer-x2,dbaxa/pgbouncer,kvap/pgbouncer,kvap/pgbouncer