Get rid of NULLs in fpdfsdk/

fpdfsdk/fpdfxfa/fpdfxfa_app.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 "fpdfsdk/fpdfxfa/include/fpdfxfa_app.h"
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_util.h"
 #include "fpdfsdk/include/fsdk_define.h"
 #include "fpdfsdk/include/fsdk_mgr.h"
 #include "public/fpdf_formfill.h"
 #include "xfa/fxbarcode/include/BC_Library.h"
 #include "xfa/fxfa/include/xfa_ffapp.h"
 #include "xfa/fxfa/include/xfa_fontmgr.h"
 
-CPDFXFA_App* CPDFXFA_App::g_pApp = NULL;
+CPDFXFA_App* CPDFXFA_App::g_pApp = nullptr;
 
 CPDFXFA_App* CPDFXFA_App::GetInstance() {
   if (!g_pApp) {
     g_pApp = new CPDFXFA_App();
   }
   return g_pApp;
 }
 
 void CPDFXFA_App::ReleaseInstance() {
   delete g_pApp;
-  g_pApp = NULL;
+  g_pApp = nullptr;
 }
 
 CPDFXFA_App::CPDFXFA_App()
     : m_bJavaScriptInitialized(FALSE),
-      m_pXFAApp(NULL),
+      m_pXFAApp(nullptr),
       m_pIsolate(nullptr),
       m_csAppType(JS_STR_VIEWERTYPE_STANDARD) {
   m_pEnvList.RemoveAll();
 }
 
 CPDFXFA_App::~CPDFXFA_App() {
   delete m_pXFAApp;
-  m_pXFAApp = NULL;
+  m_pXFAApp = nullptr;
 
   FXJSE_Runtime_Release(m_pIsolate);
   m_pIsolate = nullptr;
 
   FXJSE_Finalize();
   BC_Library_Destory();
 }
 
 FX_BOOL CPDFXFA_App::Initialize(v8::Isolate* pIsolate) {
   BC_Library_Init();
@@ skipping 131 matching lines @@
 CFX_WideString CPDFXFA_App::Response(const CFX_WideString& wsQuestion,
                                      const CFX_WideString& wsTitle,
                                      const CFX_WideString& wsDefaultAnswer,
                                      FX_BOOL bMark) {
   CFX_WideString wsAnswer;
   CPDFDoc_Environment* pEnv = m_pEnvList.GetAt(0);
   if (pEnv) {
     int nLength = 2048;
     char* pBuff = new char[nLength];
     nLength = pEnv->JS_appResponse(wsQuestion.c_str(), wsTitle.c_str(),
-                                   wsDefaultAnswer.c_str(), NULL, bMark, pBuff,
-                                   nLength);
+                                   wsDefaultAnswer.c_str(), nullptr, bMark,
+                                   pBuff, nLength);
     if (nLength > 0) {
       nLength = nLength > 2046 ? 2046 : nLength;
       pBuff[nLength] = 0;
       pBuff[nLength + 1] = 0;
       wsAnswer = CFX_WideString::FromUTF16LE(
           reinterpret_cast<const unsigned short*>(pBuff),
           nLength / sizeof(unsigned short));
     }
     delete[] pBuff;
   }
@@ skipping 138 matching lines @@
           L"The value you entered for %s is invalid. To ignore validations for "
           L"%s, click Ignore.";
       return;
     case XFA_IDS_ValidateError:
       wsString = L"The value you entered for %s is invalid.";
       return;
   }
 }
 
 IFWL_AdapterTimerMgr* CPDFXFA_App::GetTimerMgr() {
-  CXFA_FWLAdapterTimerMgr* pAdapter = NULL;
+  CXFA_FWLAdapterTimerMgr* pAdapter = nullptr;
   CPDFDoc_Environment* pEnv = m_pEnvList.GetAt(0);
   if (pEnv)
     pAdapter = new CXFA_FWLAdapterTimerMgr(pEnv);
   return pAdapter;
 }