Use local variable for getter function in Error.stack

src/messages.js

 // Copyright 2012 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:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 744 matching lines @@
 
 function GetStackTraceLine(recv, fun, pos, isGlobal) {
   return new CallSite(recv, fun, pos).toString();
 }
 
 // ----------------------------------------------------------------------------
 // Error implementation
 
 // 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;
     }
     value = value_factory(obj);
     value_factory = null;
     return value;
   };
   var setter = function(v) {
     value_factory = null;
@@ skipping 478 matching lines @@
     throw e;
   }
 }
 
 
 InstallFunctions($Error.prototype, DONT_ENUM, ['toString', ErrorToString]);
 
 // Boilerplate for exceptions for stack overflows. Used from
 // Isolate::StackOverflow().
 var kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []);