maintner: fix screw-up from CL 42615 See comments on https://golang.org/cl/42615 Change-Id: I0d7889319612fac62934c06c3c082893d9370615 Reviewed-on: https://go-review.googlesource.com/42831 Reviewed-by: Dmitri Shuralyov <shurcool@gmail.com>