Remove NULL in xfa/

xfa/fxfa/parser/xfa_document_serialize.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_document_serialize.h"
 
 #include "xfa/fde/xml/fde_xml_imp.h"
 #include "xfa/fgas/crt/fgas_codepage.h"
@@ skipping 13 matching lines @@
 FX_BOOL CXFA_DataImporter::ImportData(IFX_FileRead* pDataDocument) {
   IXFA_Parser* pDataDocumentParser = IXFA_Parser::Create(m_pDocument);
   if (!pDataDocumentParser) {
     return FALSE;
   }
   if (pDataDocumentParser->StartParse(pDataDocument, XFA_XDPPACKET_Datasets) !=
       XFA_PARSESTATUS_Ready) {
     pDataDocumentParser->Release();
     return FALSE;
   }
-  if (pDataDocumentParser->DoParse(NULL) < XFA_PARSESTATUS_Done) {
+  if (pDataDocumentParser->DoParse(nullptr) < XFA_PARSESTATUS_Done) {
     pDataDocumentParser->Release();
     return FALSE;
   }
   CXFA_Node* pImportDataRoot = pDataDocumentParser->GetRootNode();
   if (!pImportDataRoot) {
     pDataDocumentParser->Release();
     return FALSE;
   }
   CXFA_Node* pDataModel =
       ToNode(m_pDocument->GetXFAObject(XFA_HASHCODE_Datasets));
@@ skipping 425 matching lines @@
                                   CXFA_Node* pNode,
                                   uint32_t dwFlag,
                                   const FX_CHAR* pChecksum) {
   if (!pWrite) {
     ASSERT(false);
     return FALSE;
   }
   IFX_Stream* pStream = IFX_Stream::CreateStream(
       pWrite,
       FX_STREAMACCESS_Text | FX_STREAMACCESS_Write | FX_STREAMACCESS_Append);
-  if (pStream == NULL) {
+  if (!pStream) {
     return FALSE;
   }
   pStream->SetCodePage(FX_CODEPAGE_UTF8);
   FX_BOOL bRet = Export(pStream, pNode, dwFlag, pChecksum);
   pStream->Release();
   return bRet;
 }
 FX_BOOL CXFA_DataExporter::Export(IFX_Stream* pStream,
                                   CXFA_Node* pNode,
                                   uint32_t dwFlag,
@@ skipping 81 matching lines @@
         pXMLElement->RemoveAttribute(L"xfa:dataNode");
       }
     } else {
       CFDE_XMLNode* pXMLNode = pDataNode->GetXMLMappingNode();
       ASSERT(pXMLNode->GetType() == FDE_XMLNODE_Element);
       static_cast<CFDE_XMLElement*>(pXMLNode)->SetString(L"xfa:dataNode",
                                                          L"dataGroup");
     }
   }
 }