Get rid of NULLs in fpdfsdk/

fpdfsdk/fsdk_actionhandler.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/include/fsdk_actionhandler.h"
 
 #include <set>
 
@@ skipping 205 matching lines @@
 
   return TRUE;
 }
 
 FX_BOOL CPDFSDK_ActionHandler::IsValidField(CPDFSDK_Document* pDocument,
                                             CPDF_Dictionary* pFieldDict) {
   ASSERT(pFieldDict);
 
   CPDFSDK_InterForm* pInterForm = pDocument->GetInterForm();
   CPDF_InterForm* pPDFInterForm = pInterForm->GetInterForm();
-  return pPDFInterForm->GetFieldByDict(pFieldDict) != NULL;
+  return !!pPDFInterForm->GetFieldByDict(pFieldDict);
 }
 
 FX_BOOL CPDFSDK_ActionHandler::ExecuteFieldAction(
     const CPDF_Action& action,
     CPDF_AAction::AActionType type,
     CPDFSDK_Document* pDocument,
     CPDF_FormField* pFormField,
     PDFSDK_FieldAction& data,
     std::set<CPDF_Dictionary*>* visited) {
   CPDF_Dictionary* pDict = action.GetDict();
@@ skipping 394 matching lines @@
     const CPDF_Action& action,
     CPDFSDK_Document* pDocument) {
   CPDFSDK_InterForm* pInterForm = (CPDFSDK_InterForm*)pDocument->GetInterForm();
   if (pInterForm->DoAction_ImportData(action)) {
     pDocument->SetChangeMark();
     return TRUE;
   }
 
   return FALSE;
 }