Don't cache the fact that codereview.settings wasn't found.
Don't cache the fact that codereview.settings wasn't found.

It must always be present.

BUG=none
TBR=none

Review URL: http://codereview.chromium.org/3280013

git-svn-id: bd64dd6fa6f3f0ed0c0666d1018379882b742947@58060 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

svn2github/chromium-depot-tools,svn2github/chromium-depot-tools,svn2github/chromium-depot-tools