Fix all the code which has duplicate variable declarations

core/fxge/dib/fx_dib_transform.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 "core/fxge/dib/dib_int.h"
 
 #include "core/fxge/include/fx_dib.h"
 
@@ skipping 606 matching lines @@
             const uint8_t* src_pixel =
                 stretch_buf + stretch_pitch * src_row + src_col;
             *dest_scan = *src_pixel;
           }
           dest_scan++;
         }
       }
     }
   } else {
     int Bpp = m_Storer.GetBitmap()->GetBPP() / 8;
-    int destBpp = pTransformed->GetBPP() / 8;
     if (Bpp == 1) {
       uint32_t argb[256];
       FX_ARGB* pPal = m_Storer.GetBitmap()->GetPalette();
       if (pPal) {
         for (int i = 0; i < 256; i++) {
           argb[i] = pPal[i];
         }
       } else {
         if (m_Storer.GetBitmap()->IsCmykImage()) {
           for (int i = 0; i < 256; i++) {
             argb[i] = 255 - i;
           }
         } else {
           for (int i = 0; i < 256; i++) {
             argb[i] = 0xff000000 | (i * 0x010101);
           }
         }
       }
+      int destBpp = pTransformed->GetBPP() / 8;
       if (!(m_Flags & FXDIB_DOWNSAMPLE) &&
           !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
         CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
         for (int row = 0; row < m_result.Height(); row++) {
           uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row);
           for (int col = 0; col < m_result.Width(); col++) {
             int src_col_l, src_row_l, res_x, res_y;
             result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x,
                                          res_y);
             if (src_col_l >= 0 && src_col_l <= stretch_width &&
@@ skipping 290 matching lines @@
       }
     }
   }
   m_Storer.Replace(std::move(pTransformed));
   return FALSE;
 }
 
 std::unique_ptr<CFX_DIBitmap> CFX_ImageTransformer::DetachBitmap() {
   return m_Storer.Detach();
 }