Clean up XFA code which causes warnings

xfa/fxbarcode/oned/BC_OnedCode128Writer.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 2010 ZXing authors
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ skipping 27 matching lines @@
   return m_codeFormat;
 }
 FX_BOOL CBC_OnedCode128Writer::CheckContentValidity(
     const CFX_WideStringC& contents) {
   FX_BOOL ret = TRUE;
   int32_t position = 0;
   int32_t patternIndex = -1;
   if (m_codeFormat == BC_CODE128_B || m_codeFormat == BC_CODE128_C) {
     while (position < contents.GetLength()) {
       patternIndex = (int32_t)contents.GetAt(position);
-      if (patternIndex >= 32 && patternIndex <= 126 && patternIndex != 34) {
-        position++;
-        continue;
-      } else {
+      if (patternIndex < 32 || patternIndex > 126 || patternIndex == 34) {
         ret = FALSE;
         break;
       }
       position++;
     }
   } else {
     ret = FALSE;
   }
   return ret;
 }
@@ skipping 163 matching lines @@
       }
     }
     patterns->Add(CBC_OnedCode128Reader::CODE_PATTERNS[patternIndex]);
     checkSum += patternIndex * checkWeight;
     if (position != 0) {
       checkWeight++;
     }
   }
   return checkSum;
 }