XFA: Fix DOS newlines

xfa/src/fxbarcode/pdf417/BC_PDF417ECModulusPoly.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 2012 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 311 matching lines @@
           result += 'x';
         } else {
           result += "x^";
           result += degree;
         }
       }
     }
   }
   return result;
 }