Revert of Remove CPDF_Object::Release() in favor of direct delete

fpdfsdk/fpdfppo.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 "public/fpdf_ppo.h"
 
 #include <map>
 #include <memory>
@@ skipping 267 matching lines @@
     return 0;
 
   CPDF_Object* pClone = pDirect->Clone();
   if (!pClone)
     return 0;
 
   if (CPDF_Dictionary* pDictClone = pClone->AsDictionary()) {
     if (pDictClone->KeyExist("Type")) {
       CFX_ByteString strType = pDictClone->GetStringFor("Type");
       if (!FXSYS_stricmp(strType.c_str(), "Pages")) {
-        delete pDictClone;
+        pDictClone->Release();
         return 4;
       }
       if (!FXSYS_stricmp(strType.c_str(), "Page")) {
-        delete pDictClone;
+        pDictClone->Release();
         return 0;
       }
     }
   }
   dwNewObjNum = pDoc->AddIndirectObject(pClone);
   (*pObjNumberMap)[dwObjnum] = dwNewObjNum;
   if (!UpdateReference(pClone, pDoc, pObjNumberMap)) {
-    delete pClone;
+    pClone->Release();
     return 0;
   }
   return dwNewObjNum;
 }
 
 FPDF_BOOL ParserPageRangeString(CFX_ByteString rangstring,
                                 std::vector<uint16_t>* pageArray,
                                 int nCount) {
   if (rangstring.GetLength() != 0) {
     rangstring.Remove(' ');
@@ skipping 85 matching lines @@
   if (!pSrcDict)
     return false;
 
   CPDF_Dictionary* pDstDict = pDstDoc->GetRoot();
   if (!pDstDict)
     return false;
 
   pDstDict->SetFor("ViewerPreferences", pSrcDict->CloneDirectObject());
   return true;
 }