Group cases more together in `dns_rcode_str_from_gai_error`.
Group cases more together in `dns_rcode_str_from_gai_error`.

cwyang/h2o,cwyang/h2o,cwyang/h2o,devnexen/h2o,devnexen/h2o,devnexen/h2o,devnexen/h2o,yannick/h2o,cwyang/h2o,h2o/h2o,h2o/h2o,yannick/h2o,devnexen/h2o,h2o/h2o,yannick/h2o,h2o/h2o,h2o/h2o,h2o/h2o,cwyang/h2o,yannick/h2o,h2o/h2o,devnexen/h2o,devnexen/h2o,devnexen/h2o,cwyang/h2o,yannick/h2o,yannick/h2o,cwyang/h2o,h2o/h2o,devnexen/h2o,cwyang/h2o,yannick/h2o,yannick/h2o,yannick/h2o,h2o/h2o