Use local variable for getter function in Error.stack

R=verwaest@chromium.org
BUG=

Review URL: https://chromiumcodereview.appspot.com/10911056

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12429 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/messages.js

@@ -762,11 +762,12 @@ function GetStackTraceLine(recv, fun, pos, isGlobal) {
 
 // Defines accessors for a property that is calculated the first time
 // the property is read.
-function DefineOneShotAccessor(obj, name, value_factory) {
+function DefineOneShotAccessor(obj, name, fun) {
   // Note that the accessors consistently operate on 'obj', not 'this'.
   // Since the object may occur in someone else's prototype chain we
   // can't rely on 'this' being the same as 'obj'.
   var value;
+  var value_factory = fun;
   var getter = function() {
     if (value_factory == null) {
       return value;