Fix all the code which has duplicate variable declarations

fpdfsdk/formfiller/cffl_iformfiller.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 "fpdfsdk/formfiller/cffl_iformfiller.h"
 
 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
@@ skipping 422 matching lines @@
       fa.bShift = m_pApp->FFI_IsSHIFTKeyDown(nFlag);
 
       CFFL_FormFiller* pFormFiller = GetFormFiller(pWidget, TRUE);
       if (!pFormFiller)
         return FALSE;
       pFormFiller->GetActionData(pPageView, CPDF_AAction::GetFocus, fa);
       pWidget->OnAAction(CPDF_AAction::GetFocus, fa, pPageView);
       m_bNotifying = FALSE;
 
       if (pWidget->IsAppModified()) {
-        if (CFFL_FormFiller* pFormFiller = GetFormFiller(pWidget, FALSE)) {
-          pFormFiller->ResetPDFWindow(pPageView,
-                                      nValueAge == pWidget->GetValueAge());
+        if (CFFL_FormFiller* pFiller = GetFormFiller(pWidget, FALSE)) {
+          pFiller->ResetPDFWindow(pPageView,
+                                  nValueAge == pWidget->GetValueAge());
         }
       }
     }
   }
 
   if (CFFL_FormFiller* pFormFiller = GetFormFiller(pAnnot, TRUE))
     pFormFiller->SetFocusForAnnot(pAnnot, nFlag);
 
   return TRUE;
 }
@@ skipping 552 matching lines @@
           bExit = TRUE;
           m_bNotifying = FALSE;
           return;
         }
       }
 
       m_bNotifying = FALSE;
     }
   }
 }