fmt: enable and fix malloc test On 32-bit machines, %g takes an extra malloc. I don't know why yet, but this makes the test pass again, and enables it even for -short.
fmt: enable and fix malloc test
On 32-bit machines, %g takes an extra malloc. I don't know why yet,
but this makes the test pass again, and enables it even for -short.

Fixes issue 2653.

R=golang-dev, bradfitz, r
CC=golang-dev
http://codereview.appspot.com/5542055
abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go,abustany/go