Fix issue 540 by handling the case that a declaration is in the...

Fix issue 540 by handling the case that a declaration is in the
arguments object.

See http://code.google.com/p/v8/issues/detail?id=540

Committed: http://code.google.com/p/v8/source/detail?r=3421

[Mads Ager (chromium), 2009-12-04 11:58:08]

STV!