Fix all the code which has duplicate variable declarations

core/fpdfapi/fpdf_font/cpdf_cidfont.cpp

 // Copyright 2016 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/fpdfapi/fpdf_font/cpdf_cidfont.h"
 
 #include "core/fpdfapi/fpdf_cmaps/cmap_int.h"
 #include "core/fpdfapi/fpdf_font/font_int.h"
@@ skipping 664 matching lines @@
       iBaseEncoding = PDFFONT_ENCODING_STANDARD;
       if (bMSUnicode) {
         iBaseEncoding = PDFFONT_ENCODING_WINANSI;
       } else if (bMacRoman) {
         iBaseEncoding = PDFFONT_ENCODING_MACROMAN;
       }
       const FX_CHAR* name = GetAdobeCharName(iBaseEncoding, NULL, charcode);
       if (!name) {
         return charcode == 0 ? -1 : (int)charcode;
       }
-      uint16_t unicode = PDF_UnicodeFromAdobeName(name);
-      if (unicode) {
+      uint16_t name_unicode = PDF_UnicodeFromAdobeName(name);
+      if (name_unicode) {
         if (bMSUnicode) {
-          index = FXFT_Get_Char_Index(face, unicode);
+          index = FXFT_Get_Char_Index(face, name_unicode);
         } else if (bMacRoman) {
           uint32_t maccode =
-              FT_CharCodeFromUnicode(FXFT_ENCODING_APPLE_ROMAN, unicode);
+              FT_CharCodeFromUnicode(FXFT_ENCODING_APPLE_ROMAN, name_unicode);
           index = !maccode ? FXFT_Get_Name_Index(face, (char*)name)
                            : FXFT_Get_Char_Index(face, maccode);
         } else {
-          return FXFT_Get_Char_Index(face, unicode);
+          return FXFT_Get_Char_Index(face, name_unicode);
         }
       } else {
         return charcode == 0 ? -1 : (int)charcode;
       }
       if (index == 0 || index == 0xffff) {
         return charcode == 0 ? -1 : (int)charcode;
       }
       return index;
     }
     if (m_Charset == CIDSET_JAPAN1) {
@@ skipping 102 matching lines @@
                                     int nElements) {
   int width_status = 0;
   int iCurElement = 0;
   int first_code = 0;
   int last_code = 0;
   for (size_t i = 0; i < pArray->GetCount(); i++) {
     CPDF_Object* pObj = pArray->GetDirectObjectAt(i);
     if (!pObj)
       continue;
 
-    if (CPDF_Array* pArray = pObj->AsArray()) {
+    if (CPDF_Array* pObjArray = pObj->AsArray()) {
       if (width_status != 1)
         return;
 
-      for (size_t j = 0; j < pArray->GetCount(); j += nElements) {
+      for (size_t j = 0; j < pObjArray->GetCount(); j += nElements) {
         result.Add(first_code);
         result.Add(first_code);
-        for (int k = 0; k < nElements; k++) {
-          result.Add(pArray->GetIntegerAt(j + k));
-        }
+        for (int k = 0; k < nElements; k++)
+          result.Add(pObjArray->GetIntegerAt(j + k));
         first_code++;
       }
       width_status = 0;
     } else {
       if (width_status == 0) {
         first_code = pObj->GetInteger();
         width_status = 1;
       } else if (width_status == 1) {
         last_code = pObj->GetInteger();
         width_status = 2;
@@ skipping 48 matching lines @@
 
 const uint8_t* CPDF_CIDFont::GetCIDTransform(uint16_t CID) const {
   if (m_Charset != CIDSET_JAPAN1 || m_pFontFile)
     return nullptr;
 
   const struct CIDTransform* found = (const struct CIDTransform*)FXSYS_bsearch(
       &CID, g_Japan1_VertCIDs, FX_ArraySize(g_Japan1_VertCIDs),
       sizeof(g_Japan1_VertCIDs[0]), CompareCIDTransform);
   return found ? &found->a : nullptr;
 }