There is no definition for HArgumentsObject, so LDummyUse confuses the register allocator. I have recently made similar fix for HCapturedObject (see https://codereview.chromium.org/222283002/).

BUG=
R=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/226613007

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@20663 ce2b1a6d-e550-0410-aec6-3dcde31c8c00