Return unique_ptrs from CFX_DIBitmap::Clone().

xfa/fxbarcode/BC_TwoDimWriter.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 <algorithm>
 
 #include "core/fxge/cfx_graphstatedata.h"
 #include "core/fxge/cfx_pathdata.h"
@@ skipping 64 matching lines @@
     topPos = (m_Height - m_output->GetHeight()) / 2;
   }
   for (int32_t x = 0; x < m_output->GetWidth(); x++) {
     for (int32_t y = 0; y < m_output->GetHeight(); y++) {
       if (m_output->Get(x, y)) {
         pOutBitmap->SetPixel(leftPos + x, topPos + y, m_barColor);
       }
     }
   }
   if (!m_bFixedSize) {
-    CFX_DIBitmap* pStretchBitmap = pOutBitmap->StretchTo(m_Width, m_Height);
+    std::unique_ptr<CFX_DIBitmap> pStretchBitmap =
+        pOutBitmap->StretchTo(m_Width, m_Height);
     delete pOutBitmap;
-    pOutBitmap = pStretchBitmap;
+    pOutBitmap = pStretchBitmap.release();
   }
 }
 
 void CBC_TwoDimWriter::RenderResult(uint8_t* code,
                                     int32_t codeWidth,
                                     int32_t codeHeight,
                                     int32_t& e) {
   int32_t inputWidth = codeWidth;
   int32_t inputHeight = codeHeight;
   int32_t tempWidth = inputWidth + 2;
@@ skipping 43 matching lines @@
     for (int32_t inputX = 0, outputX = leftPadding;
          (inputX < inputWidth) && (outputX < outputWidth - multiX);
          inputX++, outputX += multiX) {
       if (code[inputX + inputY * inputWidth] == 1) {
         m_output->SetRegion(outputX, outputY, multiX, multiY, e);
         BC_EXCEPTION_CHECK_ReturnVoid(e);
       }
     }
   }
 }