Invoke V8::Initialize() explicitly during V8 setup

fpdfsdk/src/javascript/JS_Runtime.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
  
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../include/javascript/JavaScript.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "../../include/javascript/JS_EventHandler.h"
 #include "../../include/javascript/JS_Runtime.h"
@@ skipping 22 matching lines @@
 {
 }
 
 IFXJS_Runtime*                                  CJS_RuntimeFactory::NewJSRuntime(CPDFDoc_Environment* pApp)
 {
         if (!m_bInit)
         {
                 JS_Initial();
                 m_platform = v8::platform::CreateDefaultPlatform();
                 v8::V8::InitializePlatform(m_platform);
+                v8::V8::Initialize();
                 
                 m_bInit = TRUE;
         }
         return new CJS_Runtime(pApp);
 }
 void                                                    CJS_RuntimeFactory::AddRef()
 {
         //to do.Should be implemented as atom manipulation.
         m_nRef++;
 }
@@ skipping 415 matching lines @@
         return v8::Isolate::GetCurrent() == m_isolate;
 }
 void    CJS_Runtime::Exit()
 {
         if(m_isolate) m_isolate->Exit();
 }
 void    CJS_Runtime::Enter()
 {
         if(m_isolate) m_isolate->Enter();
 }