This is an automated follow-up to CL 10120.
It was generated with a combination of eg and gofmt -r.

No functional changes. Passes toolstash -cmp.

Change-Id: I0dc6d146372012b4cce9cc4064066daa6694eee6
Reviewed-on: https://go-review.googlesource.com/10144Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>