The deopt will not happen in production code, since we check that
lengths of fixed typed arrays are smis before calling
TypedArrayInitialze, but that makes deopt bot happy.

R=svenpanne@chromium.org

Review URL: https://codereview.chromium.org/212643016

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@20324 ce2b1a6d-e550-0410-aec6-3dcde31c8c00