Update golang.org/x/tools commit hash to 0673112 (#359)

Author: renovate[bot]

go.mod

@@ -15,7 +15,7 @@ require (
 	golang.org/x/net v0.0.0-20190909003024-a7b16738d86b // indirect
 	golang.org/x/sys v0.0.0-20190909082730-f460065e899a // indirect
 	golang.org/x/text v0.3.2 // indirect
-	golang.org/x/tools v0.0.0-20190909030654-5b82db07426d
+	golang.org/x/tools v0.0.0-20190909214602-067311248421
 	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
 	gopkg.in/yaml.v2 v2.2.2
 )

go.sum

@@ -72,6 +72,8 @@ golang.org/x/tools v0.0.0-20190422233926-fe54fb35175b h1:NVD8gBK33xpdqCaZVVtd6OF
 golang.org/x/tools v0.0.0-20190422233926-fe54fb35175b/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190909030654-5b82db07426d h1:PhtdWYteEBebOX7KXm4qkIAVSUTHQ883/2hRB92r9lk=
 golang.org/x/tools v0.0.0-20190909030654-5b82db07426d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20190909214602-067311248421 h1:NmmWqJbt02YJHmp4A4gBXvsXXIzzixjzE1y6PKUyIjk=
+golang.org/x/tools v0.0.0-20190909214602-067311248421/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=