Return unique_ptrs from CFX_DIBitmap::Clone().

xfa/fxbarcode/BC_TwoDimWriter.cpp

Index: xfa/fxbarcode/BC_TwoDimWriter.cpp
diff --git a/xfa/fxbarcode/BC_TwoDimWriter.cpp b/xfa/fxbarcode/BC_TwoDimWriter.cpp
index 83b7b3c0816bab4c5ffc7b667237c701cefed4d9..ec6c3626b2a574a84fc3f8323692937e21e8b31f 100644
--- a/xfa/fxbarcode/BC_TwoDimWriter.cpp
+++ b/xfa/fxbarcode/BC_TwoDimWriter.cpp
@@ -82,9 +82,10 @@ void CBC_TwoDimWriter::RenderBitmapResult(CFX_DIBitmap*& pOutBitmap,
     }
   }
   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();
   }
 }