Adding Lasse's improvement to r4364   http://codereview.chromium.org/1556019 http://code.google.com/p/v8/source/detail?r=4364
Adding Lasse's improvement to r4364  
http://codereview.chromium.org/1556019
http://code.google.com/p/v8/source/detail?r=4364

Review URL: http://codereview.chromium.org/1638001

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@4373 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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