Elements field of newly allocated JSArray could be left uninitialized in some cases (fast literal case).
Elements field of newly allocated JSArray could be left uninitialized in some cases (fast literal case).

BUG=340124
LOG=Y
R=hpayer@chromium.org

Review URL: https://codereview.chromium.org/152673004

git-svn-id: b158db1e4b4ab85d4c9e510fdef4b1e8c614b15b@19026 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

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