Fix a few more warnings in chromium_code mode.

core/src/fpdfapi/fpdf_render/fpdf_render_loadimage.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 "../../../include/fxge/fx_ge.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fpdfapi/fpdf_render.h"
@@ skipping 927 matching lines @@
     }
     return bpc;
 }
 #define NORMALCOLOR_MAX(color, max) (color) > (max) ? (max) : (color) < 0 ? 0 : (color);
 void CPDF_DIBSource::TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan) const
 {
     int max_data = (1 << m_bpc) - 1;
     if (m_bDefaultDecode) {
         if (m_Family == PDFCS_DEVICERGB || m_Family == PDFCS_CALRGB) {
             if (m_bpc == 16) {
-                FX_LPBYTE dest_pos = dest_scan;
                 FX_LPCBYTE src_pos = src_scan;
                 for (int col = 0; col < m_Width; col ++) {
                     *dest_scan++ = src_pos[4];
                     *dest_scan++ = src_pos[2];
                     *dest_scan++ = *src_pos;
                     src_pos += 6;
                 }
             } else if (m_bpc == 8) {
-                FX_LPBYTE dest_pos = dest_scan;
                 FX_LPCBYTE src_pos = src_scan;
                 for (int column = 0; column < m_Width; column ++) {
                     *dest_scan++ = src_pos[2];
                     *dest_scan++ = src_pos[1];
                     *dest_scan++ = *src_pos;
                     src_pos += 3;
                 }
             } else {
                 int src_bit_pos = 0;
                 int dest_byte_pos = 0;
@@ skipping 385 matching lines @@
                             int color_value = (int)((m_pCompData[i].m_DecodeMin + m_pCompData[i].m_DecodeStep * (FX_FLOAT)pSrcPixel[i]) * 255.0f + 0.5f);
                             temp[i] = color_value > 255 ? 255 : (color_value < 0 ? 0 : color_value);
                         }
                         m_pColorSpace->TranslateImageLine(color, temp, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
                     } else {
                         if (bpc < 8) {
                             int src_bit_pos = 0;
                             if (src_x % 2) {
                                 src_bit_pos = 4;
                             }
-                            int value = (1 << bpc)  - 1;
                             for (FX_DWORD i = 0; i < m_nComponents; i ++) {
                                 temp[i] = (FX_BYTE)(_GetBits8(pSrcPixel, src_bit_pos, bpc) * unit_To8Bpc);
                                 src_bit_pos += bpc;
                             }
                             m_pColorSpace->TranslateImageLine(color, temp, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
                         } else {
                             m_pColorSpace->TranslateImageLine(color, pSrcPixel, 1, 0, 0, m_bLoadMask && m_GroupFamily == PDFCS_DEVICECMYK && m_Family == PDFCS_DEVICECMYK);
                         }
                     }
                     argb = FXARGB_MAKE(0xff, color[2], color[1], color[0]);
@@ skipping 134 matching lines @@
     if (!m_bCached) {
         if (m_pBitmap) {
             delete m_pBitmap;
             m_pBitmap = NULL;
         }
         if (m_pMask) {
             delete m_pMask;
         }
     }
 }