Fix all the code which has duplicate variable declarations

xfa/fde/cfde_txtedtengine.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
 
 #include "xfa/fde/cfde_txtedtengine.h"
 
 #include "xfa/fde/cfde_txtedtbuf.h"
 #include "xfa/fde/cfde_txtedtbufiter.h"
@@ skipping 881 matching lines @@
     if (ParagPosEnd.nParagIndex < m_ParagPtrArray.GetSize() - 1) {
       ParagPosEnd.nParagIndex++;
     } else {
       bLastParag = TRUE;
     }
   }
   int32_t nTotalLineCount = 0;
   int32_t nTotalCharCount = 0;
   int32_t i = 0;
   for (i = ParagPosBgn.nParagIndex; i <= ParagPosEnd.nParagIndex; i++) {
-    CFDE_TxtEdtParag* pParag = m_ParagPtrArray[i];
-    pParag->CalcLines();
-    nTotalLineCount += pParag->GetLineCount();
-    nTotalCharCount += pParag->GetTextLength();
+    CFDE_TxtEdtParag* pTextParag = m_ParagPtrArray[i];
+    pTextParag->CalcLines();
+    nTotalLineCount += pTextParag->GetLineCount();
+    nTotalCharCount += pTextParag->GetTextLength();
   }
   m_pTxtBuf->Delete(nStart, nCount);
   int32_t nNextParagIndex = (ParagPosBgn.nCharIndex == 0 && bLastParag)
                                 ? ParagPosBgn.nParagIndex
                                 : (ParagPosBgn.nParagIndex + 1);
   for (i = nNextParagIndex; i <= ParagPosEnd.nParagIndex; i++) {
     delete m_ParagPtrArray[nNextParagIndex];
     m_ParagPtrArray.RemoveAt(nNextParagIndex);
   }
   if (!(bLastParag && ParagPosBgn.nCharIndex == 0)) {
@@ skipping 691 matching lines @@
       m_SelRangePtrArr.RemoveAt(nCountRange);
       DeleteRange_DoRecord(nSelStart, nSelCount, TRUE);
     }
     ClearSelection();
     m_Param.pEventSink->On_TextChanged(this, m_ChangeInfo);
     m_Param.pEventSink->On_SelChanged(this);
     SetCaretPos(nSelStart, TRUE);
     return;
   }
 }