go fix
Signed-off-by: Wei Fu <fuweid89@gmail.com>
In practices adds annotations in the new syntax: ``` +//go:build !linux // +build !linux ``` Fixes failing gotip PASSES='fmt' check: https://travis-ci.com/github/etcd-io/etcd/jobs/486453806
When building tools on Win,it shows `.\main.go:68:12: assignment mismatch: 2 variables but 1 values`.The reason is the return variables not match the calling from `main.go` and i try to fix it.
Signed-off-by: Gyuho Lee <gyuhox@gmail.com>
