net: fix dialgoogle_test.go ~$ nslookup www.google.com Server: 8.8.8.8 cannonical name = www-g-com-chn.l.google.com.
net: fix dialgoogle_test.go
~$ nslookup www.google.com
Server: 8.8.8.8
cannonical name = www-g-com-chn.l.google.com.

R=adg, rsc
CC=golang-dev
http://codereview.appspot.com/4445045

Committer: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>

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