Initialize list of frame elements to proper size.

src/list.h

Index: src/list.h
===================================================================
--- src/list.h	(revision 1640)
+++ src/list.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -67,6 +67,7 @@
 
   INLINE(bool is_empty() const) { return length_ == 0; }
   INLINE(int length() const) { return length_; }
+  INLINE(int capacity() const) { return capacity_; }
 
   Vector<T> ToVector() { return Vector<T>(data_, length_); }