Quick fix to ARM fixup issue introduced in r3545. The fixup code

seems somewhat broken on ARM, but this solves the issue for now.
I'll look into the code patching tomorrow.
Review URL: http://codereview.chromium.org/525068

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3546 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/runtime.js

@@ -427,7 +427,7 @@ function APPLY_PREPARE(args) {
     }
   }
 
-  length = (args == null) ? 0 : TO_UINT32(args.length);
+  length = (args == null) ? 0 : %ToUint32(args.length);
 
   // We can handle any number of apply arguments if the stack is
   // big enough, but sanity check the value to avoid overflow when