Make CPDF_Array take unique_ptrs

core/fpdfapi/parser/cpdf_data_avail.cpp

 // Copyright 2016 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 "core/fpdfapi/parser/cpdf_data_avail.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 452 matching lines @@
     std::unique_ptr<CPDF_Object> pObj =
         GetObject(dwPageObjNum, pHints, &bExist);
     if (!pObj) {
       if (bExist)
         UnavailObjList.Add(dwPageObjNum);
       continue;
     }
 
     CPDF_Array* pArray = ToArray(pObj.get());
     if (pArray) {
-      for (CPDF_Object* pArrayObj : *pArray) {
-        if (CPDF_Reference* pRef = ToReference(pArrayObj))
+      for (const auto& pArrayObj : *pArray) {
+        if (CPDF_Reference* pRef = ToReference(pArrayObj.get()))
           UnavailObjList.Add(pRef->GetRefObjNum());
       }
     }
-
-    if (!pObj->IsDictionary()) {
+    if (!pObj->IsDictionary())
       continue;
-    }
 
     CFX_ByteString type = pObj->GetDict()->GetStringFor("Type");
     if (type == "Pages") {
       m_PagesArray.push_back(std::move(pObj));
       continue;
     }
   }
 
   m_PageObjList.RemoveAll();
   if (UnavailObjList.GetSize()) {
@@ skipping 1210 matching lines @@
   return AreObjectsAvailable(obj_array, true, nullptr, dummy);
 }
 
 CPDF_DataAvail::PageNode::PageNode() : m_type(PDF_PAGENODE_UNKNOWN) {}
 
 CPDF_DataAvail::PageNode::~PageNode() {
   for (int32_t i = 0; i < m_childNode.GetSize(); ++i)
     delete m_childNode[i];
   m_childNode.RemoveAll();
 }