Return unique_ptr from CPDF_Object::Clone().

core/fpdfapi/page/cpdf_streamcontentparser.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/page/cpdf_streamcontentparser.h"
 
 #include <memory>
 #include <utility>
@@ skipping 649 matching lines @@
   }
   ReplaceAbbr(pDict);
   CPDF_Object* pCSObj = nullptr;
   if (pDict->KeyExist("ColorSpace")) {
     pCSObj = pDict->GetDirectObjectFor("ColorSpace");
     if (pCSObj->IsName()) {
       CFX_ByteString name = pCSObj->GetString();
       if (name != "DeviceRGB" && name != "DeviceGray" && name != "DeviceCMYK") {
         pCSObj = FindResourceObj("ColorSpace", name);
         if (pCSObj && pCSObj->IsInline()) {
-          pCSObj = pCSObj->Clone();
+          pCSObj = pCSObj->Clone().release();
           pDict->SetFor("ColorSpace", pCSObj);
         }
       }
     }
   }
   pDict->SetNameFor("Subtype", "Image");
   std::unique_ptr<CPDF_Stream> pStream(
       m_pSyntax->ReadInlineStream(m_pDocument, pDict, pCSObj));
   bool bGaveDictAway = !!pStream;
   while (1) {
@@ skipping 984 matching lines @@
       }
       default:
         bProcessed = false;
     }
     if (!bProcessed) {
       m_pSyntax->SetPos(last_pos);
       return;
     }
   }
 }