Fix broken build

Due to copy/paste from Google-internal branch.
I can't explain why I didn't test this; sorry.

Change-Id: I7b5f083a124c7cfb0fa6cb0506465a36bd79e983
Reviewed-on: https://go-review.googlesource.com/5654
Reviewed-by: Alan Donovan <adonovan@google.com>
1 file changed