Make code compile with clang_use_chrome_plugin (part III)

xfa/fxbarcode/datamatrix/BC_DataMatrixReader.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 2007 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 39 matching lines @@
   CBC_DataMatrixDetector detector(cdr);
   detector.Init(e);
   BC_EXCEPTION_CHECK_ReturnValue(e, "");
   std::unique_ptr<CBC_QRDetectorResult> detectorResult(detector.Detect(e));
   BC_EXCEPTION_CHECK_ReturnValue(e, "");
   std::unique_ptr<CBC_CommonDecoderResult> decodeResult(
       m_decoder->Decode(detectorResult->GetBits(), e));
   BC_EXCEPTION_CHECK_ReturnValue(e, "");
   return decodeResult->GetText();
 }
+
 CFX_ByteString CBC_DataMatrixReader::Decode(CBC_BinaryBitmap* image,
                                             int32_t& e) {
   CFX_ByteString bs = Decode(image, 0, e);
   BC_EXCEPTION_CHECK_ReturnValue(e, "");
   return bs;
 }