Do not check pointers before deleting them.

xfa/fxbarcode/oned/BC_OneDimWriter.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
 // Original code is licensed as follows:
 /*
  * Copyright 2011 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 272 matching lines @@
   }
   if (device) {
     ShowDeviceChars(device, matrix, str, geWidth, pCharPos, (FX_FLOAT)locX,
                     (FX_FLOAT)locY, barWidth);
   } else {
     ShowBitmapChars(pOutBitmap, str, geWidth, pCharPos, (FX_FLOAT)locX,
                     (FX_FLOAT)locY, barWidth);
   }
   FX_Free(pCharPos);
 }
+
 void CBC_OneDimWriter::RenderBitmapResult(CFX_DIBitmap*& pOutBitmap,
                                           const CFX_WideStringC& contents,
                                           int32_t& e) {
   if (m_output == NULL) {
     BC_EXCEPTION_CHECK_ReturnVoid(e);
   }
   pOutBitmap = CreateDIBitmap(m_output->GetWidth(), m_output->GetHeight());
   pOutBitmap->Clear(m_backgroundColor);
   if (!pOutBitmap) {
     e = BCExceptionFailToCreateBitmap;
     return;
   }
   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(x, y, m_barColor);
       }
     }
   }
   int32_t i = 0;
   for (; i < contents.GetLength(); i++)
     if (contents.GetAt(i) != ' ') {
       break;
     }
   if (m_locTextLoc != BC_TEXT_LOC_NONE && i < contents.GetLength()) {
     ShowChars(contents, pOutBitmap, NULL, NULL, m_barWidth, m_multiple, e);
     BC_EXCEPTION_CHECK_ReturnVoid(e);
   }
   CFX_DIBitmap* pStretchBitmap = pOutBitmap->StretchTo(m_Width, m_Height);
-  if (pOutBitmap) {
-    delete pOutBitmap;
-  }
+  delete pOutBitmap;
   pOutBitmap = pStretchBitmap;
 }
+
 void CBC_OneDimWriter::RenderDeviceResult(CFX_RenderDevice* device,
                                           const CFX_Matrix* matrix,
                                           const CFX_WideStringC& contents,
                                           int32_t& e) {
   if (m_output == NULL) {
     BC_EXCEPTION_CHECK_ReturnVoid(e);
   }
   CFX_GraphStateData stateData;
   CFX_PathData path;
   path.AppendRect(0, 0, (FX_FLOAT)m_Width, (FX_FLOAT)m_Height);
@@ skipping 91 matching lines @@
       if (outputX + m_multiple > outputWidth && outputWidth - outputX > 0) {
         m_output->SetRegion(outputX, 0, outputWidth - outputX, outputHeight, e);
         break;
       }
       m_output->SetRegion(outputX, 0, m_multiple, outputHeight, e);
       BC_EXCEPTION_CHECK_ReturnVoid(e);
     }
     outputX += m_multiple;
   }
 }