Get rid of NULLs in xfa/

xfa/fxfa/parser/xfa_script_signaturepseudomodel.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_script_signaturepseudomodel.h"
 
 #include "xfa/fxfa/app/xfa_ffnotify.h"
 #include "xfa/fxfa/parser/xfa_doclayout.h"
@@ skipping 18 matching lines @@
   int32_t iLength = pArguments->GetLength();
   if (iLength < 1 || iLength > 4) {
     ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"verify");
     return;
   }
   CXFA_FFNotify* pNotify = m_pDocument->GetParser()->GetNotify();
   if (!pNotify) {
     return;
   }
   CXFA_FFDoc* hDoc = pNotify->GetHDOC();
-  CXFA_Node* pNode = NULL;
+  CXFA_Node* pNode = nullptr;
   if (iLength >= 1) {
     pNode = static_cast<CXFA_Node*>(pArguments->GetObject(0));
   }
   int32_t bVerify = pNotify->GetDocProvider()->Verify(hDoc, pNode);
   CFXJSE_Value* pValue = pArguments->GetReturnValue();
   if (pValue) {
     FXJSE_Value_SetInteger(pValue, bVerify);
   }
 }
 void CScript_SignaturePseudoModel::Script_SignaturePseudoModel_Sign(
     CFXJSE_Arguments* pArguments) {
   int32_t iLength = pArguments->GetLength();
   if (iLength < 3 || iLength > 7) {
     ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"sign");
     return;
   }
   CXFA_FFNotify* pNotify = m_pDocument->GetParser()->GetNotify();
   if (!pNotify) {
     return;
   }
   CXFA_FFDoc* hDoc = pNotify->GetHDOC();
-  CXFA_NodeList* pNodeList = NULL;
+  CXFA_NodeList* pNodeList = nullptr;
   CFX_WideString wsExpression;
   CFX_WideString wsXMLIdent;
   if (iLength >= 1) {
     pNodeList = (CXFA_NodeList*)pArguments->GetObject(0);
   }
   if (iLength >= 2) {
     CFX_ByteString bsExpression = pArguments->GetUTF8String(1);
     wsExpression = CFX_WideString::FromUTF8(bsExpression.AsStringC());
   }
   if (iLength >= 3) {
@@ skipping 30 matching lines @@
   int32_t iLength = pArguments->GetLength();
   if (iLength < 1 || iLength > 2) {
     ThrowException(XFA_IDS_INCORRECT_NUMBER_OF_METHOD, L"clear");
     return;
   }
   CXFA_FFNotify* pNotify = m_pDocument->GetParser()->GetNotify();
   if (!pNotify) {
     return;
   }
   CXFA_FFDoc* hDoc = pNotify->GetHDOC();
-  CXFA_Node* pNode = NULL;
+  CXFA_Node* pNode = nullptr;
   FX_BOOL bClear = TRUE;
   if (iLength >= 1) {
     pNode = static_cast<CXFA_Node*>(pArguments->GetObject(0));
   }
   if (iLength >= 2) {
     bClear = pArguments->GetInt32(1) == 0 ? FALSE : TRUE;
   }
   FX_BOOL bFlag = pNotify->GetDocProvider()->Clear(hDoc, pNode, bClear);
   CFXJSE_Value* pValue = pArguments->GetReturnValue();
   if (pValue) {
     FXJSE_Value_SetBoolean(pValue, bFlag);
   }
 }