Remove NULL in xfa/

xfa/fxfa/parser/xfa_object_imp.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/parser/xfa_object.h"
 
 #include <memory>
 
@@ skipping 3959 matching lines @@
 }
 FX_BOOL CXFA_Node::SetObject(XFA_ATTRIBUTE eAttr,
                              void* pData,
                              XFA_MAPDATABLOCKCALLBACKINFO* pCallbackInfo) {
   void* pKey = XFA_GetMapKey_Element(GetElementType(), eAttr);
   return SetUserData(pKey, pData, pCallbackInfo);
 }
 FX_BOOL CXFA_Node::TryObject(XFA_ATTRIBUTE eAttr, void*& pData) {
   void* pKey = XFA_GetMapKey_Element(GetElementType(), eAttr);
   pData = GetUserData(pKey);
-  return pData != nullptr;
+  return !!pData;
 }
 FX_BOOL CXFA_Node::SetValue(XFA_ATTRIBUTE eAttr,
                             XFA_ATTRIBUTETYPE eType,
                             void* pValue,
                             bool bNotify) {
   void* pKey = XFA_GetMapKey_Element(GetElementType(), eAttr);
   OnChanging(eAttr, bNotify);
   SetMapModuleValue(pKey, pValue);
   OnChanged(eAttr, bNotify, FALSE);
   if (IsNeedSavingXMLNode()) {
@@ skipping 1078 matching lines @@
       MoveBufferMapData(pSrcChild, pDstChild, pKey, TRUE);
     }
   }
   pSrcModule->MoveBufferMapData(pDstModule, pKey);
 }
 
 CXFA_ThisProxy::CXFA_ThisProxy(CXFA_Node* pThisNode, CXFA_Node* pScriptNode)
     : CXFA_Object(pThisNode->GetDocument(),
                   XFA_ObjectType::VariablesThis,
                   XFA_Element::Unknown),
-      m_pThisNode(NULL),
-      m_pScriptNode(NULL) {
+      m_pThisNode(nullptr),
+      m_pScriptNode(nullptr) {
   m_pThisNode = pThisNode;
   m_pScriptNode = pScriptNode;
 }
 
 CXFA_ThisProxy::~CXFA_ThisProxy() {}
 
 CXFA_Node* CXFA_ThisProxy::GetThisNode() const {
   return m_pThisNode;
 }
 
@@ skipping 173 matching lines @@
   return m_pAttachNode->InsertChild(pNewNode, pBeforeNode);
 }
 FX_BOOL CXFA_AttachNodeList::Remove(CXFA_Node* pNode) {
   return m_pAttachNode->RemoveChild(pNode);
 }
 CXFA_Node* CXFA_AttachNodeList::Item(int32_t iIndex) {
   return m_pAttachNode->GetChild(
       iIndex, XFA_Element::Unknown,
       m_pAttachNode->GetElementType() == XFA_Element::Subform);
 }