net: fix build fix Now builders say: pkg/net/dnsclient_unix_test.go:10: imported and not used: "runtime"
net: fix build fix
Now builders say:
pkg/net/dnsclient_unix_test.go:10: imported and not used: "runtime"

R=golang-dev
CC=golang-dev
https://codereview.appspot.com/12890043

wesolows/golang,firebitsbr/golang-old,wesolows/golang,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang,wesolows/golang,wesolows/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang-old,firebitsbr/golang-old,wesolows/golang-old,wesolows/golang-old,firebitsbr/golang-old,firebitsbr/golang-old,wesolows/golang,wesolows/golang,wesolows/golang-old,wesolows/golang