Fix potential deopt-loop introduced in r17143.
Fix potential deopt-loop introduced in r17143.

TBR=verwaest@chromium.org
BUG=

Review URL: https://codereview.chromium.org/26805004

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@17144 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh,UniversalFuture/moosh