The recently updated Count functions declare variables before
special-cased returns.

Change-Id: I8f726118336b7b0ff72117d12adc48b6e37e60ea
Reviewed-on: https://go-review.googlesource.com/39357Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>