Get rid of NULLs in xfa/

xfa/fxfa/app/xfa_ffimageedit.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 "xfa/fxfa/app/xfa_ffimageedit.h"
 
 #include "xfa/fwl/core/cfwl_message.h"
 #include "xfa/fwl/core/fwl_noteimp.h"
 #include "xfa/fwl/core/ifwl_app.h"
 #include "xfa/fwl/lightwidget/cfwl_picturebox.h"
 #include "xfa/fxfa/app/xfa_fffield.h"
 #include "xfa/fxfa/include/xfa_ffdoc.h"
 #include "xfa/fxfa/include/xfa_ffdocview.h"
 #include "xfa/fxfa/include/xfa_ffpageview.h"
 #include "xfa/fxfa/include/xfa_ffwidget.h"
 
 CXFA_FFImageEdit::CXFA_FFImageEdit(CXFA_FFPageView* pPageView,
                                    CXFA_WidgetAcc* pDataAcc)
-    : CXFA_FFField(pPageView, pDataAcc), m_pOldDelegate(NULL) {}
+    : CXFA_FFField(pPageView, pDataAcc), m_pOldDelegate(nullptr) {}
 CXFA_FFImageEdit::~CXFA_FFImageEdit() {
   CXFA_FFImageEdit::UnloadWidget();
 }
 FX_BOOL CXFA_FFImageEdit::LoadWidget() {
   CFWL_PictureBox* pPictureBox = new CFWL_PictureBox;
   if (pPictureBox) {
     pPictureBox->Initialize();
   }
   m_pNormalWidget = (CFWL_Widget*)pPictureBox;
   m_pNormalWidget->SetLayoutItem(this);
   IFWL_Widget* pWidget = m_pNormalWidget->GetWidget();
   CFWL_NoteDriver* pNoteDriver = FWL_GetApp()->GetNoteDriver();
   pNoteDriver->RegisterEventTarget(pWidget, pWidget);
   m_pOldDelegate = pPictureBox->SetDelegate(this);
   CXFA_FFField::LoadWidget();
   if (m_pDataAcc->GetImageEditImage()) {
     return TRUE;
   }
   UpdateFWLData();
   return TRUE;
 }
 void CXFA_FFImageEdit::UnloadWidget() {
-  m_pDataAcc->SetImageEditImage(NULL);
+  m_pDataAcc->SetImageEditImage(nullptr);
   CXFA_FFField::UnloadWidget();
 }
 void CXFA_FFImageEdit::RenderWidget(CFX_Graphics* pGS,
                                     CFX_Matrix* pMatrix,
                                     uint32_t dwStatus,
                                     int32_t iRotate) {
   if (!IsMatchVisibleStatus(dwStatus)) {
     return;
   }
   CFX_Matrix mtRotate;
@@ skipping 57 matching lines @@
   m_pDataAcc->GetUIMargin(rtUIMargin);
   CFX_RectF rtImage(m_rtUI);
   rtImage.Deflate(rtUIMargin.left, rtUIMargin.top, rtUIMargin.width,
                   rtUIMargin.height);
   m_pNormalWidget->SetWidgetRect(rtImage);
 }
 FX_BOOL CXFA_FFImageEdit::CommitData() {
   return TRUE;
 }
 FX_BOOL CXFA_FFImageEdit::UpdateFWLData() {
-  m_pDataAcc->SetImageEditImage(NULL);
+  m_pDataAcc->SetImageEditImage(nullptr);
   m_pDataAcc->LoadImageEditImage();
   return TRUE;
 }
 
 void CXFA_FFImageEdit::OnProcessMessage(CFWL_Message* pMessage) {
   m_pOldDelegate->OnProcessMessage(pMessage);
 }
 
 void CXFA_FFImageEdit::OnProcessEvent(CFWL_Event* pEvent) {
   CXFA_FFField::OnProcessEvent(pEvent);
   m_pOldDelegate->OnProcessEvent(pEvent);
 }
 
 void CXFA_FFImageEdit::OnDrawWidget(CFX_Graphics* pGraphics,
                                     const CFX_Matrix* pMatrix) {
   m_pOldDelegate->OnDrawWidget(pGraphics, pMatrix);
 }