Fix all the code which has duplicate variable declarations

fpdfsdk/fpdf_transformpage.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 "public/fpdf_transformpage.h"
 
 #include "core/fpdfapi/fpdf_page/include/cpdf_clippath.h"
 #include "core/fpdfapi/fpdf_page/include/cpdf_page.h"
@@ skipping 120 matching lines @@
   if (!pDoc)
     return FALSE;
   pDoc->AddIndirectObject(pStream);
 
   pDic = new CPDF_Dictionary;
   CPDF_Stream* pEndStream = new CPDF_Stream(nullptr, 0, pDic);
   pEndStream->SetData((const uint8_t*)" Q", 2, FALSE, FALSE);
   pDoc->AddIndirectObject(pEndStream);
 
   CPDF_Array* pContentArray = nullptr;
-  if (CPDF_Array* pArray = ToArray(pContentObj)) {
+  CPDF_Array* pArray = ToArray(pContentObj);
+  if (pArray) {
     pContentArray = pArray;
     CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
     pContentArray->InsertAt(0, pRef);
     pContentArray->AddReference(pDoc, pEndStream);
   } else if (CPDF_Reference* pReference = ToReference(pContentObj)) {
     CPDF_Object* pDirectObj = pReference->GetDirect();
     if (pDirectObj) {
-      if (CPDF_Array* pArray = pDirectObj->AsArray()) {
-        pContentArray = pArray;
+      CPDF_Array* pObjArray = pDirectObj->AsArray();
+      if (pObjArray) {
+        pContentArray = pObjArray;
         CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
         pContentArray->InsertAt(0, pRef);
         pContentArray->AddReference(pDoc, pEndStream);
       } else if (pDirectObj->IsStream()) {
         pContentArray = new CPDF_Array();
         pContentArray->AddReference(pDoc, pStream->GetObjNum());
         pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
         pContentArray->AddReference(pDoc, pEndStream);
         pPageDic->SetAtReference("Contents", pDoc,
                                  pDoc->AddIndirectObject(pContentArray));
       }
     }
   }
 
   // Need to transform the patterns as well.
   CPDF_Dictionary* pRes = pPageDic->GetDictBy("Resources");
   if (pRes) {
     CPDF_Dictionary* pPattenDict = pRes->GetDictBy("Pattern");
     if (pPattenDict) {
       for (const auto& it : *pPattenDict) {
         CPDF_Object* pObj = it.second;
         if (pObj->IsReference())
           pObj = pObj->GetDirect();
 
         CPDF_Dictionary* pDict = nullptr;
         if (pObj->IsDictionary())
           pDict = pObj->AsDictionary();
-        else if (CPDF_Stream* pStream = pObj->AsStream())
-          pDict = pStream->GetDict();
+        else if (CPDF_Stream* pObjStream = pObj->AsStream())
+          pDict = pObjStream->GetDict();
         else
           continue;
 
         CFX_Matrix m = pDict->GetMatrixBy("Matrix");
         CFX_Matrix t = *(CFX_Matrix*)matrix;
         m.Concat(t);
         pDict->SetAtMatrix("Matrix", m);
       }
     }
   }
@@ skipping 110 matching lines @@
   }
   CPDF_Dictionary* pDic = new CPDF_Dictionary;
   CPDF_Stream* pStream = new CPDF_Stream(nullptr, 0, pDic);
   pStream->SetData(strClip.GetBuffer(), strClip.GetSize(), FALSE, FALSE);
   CPDF_Document* pDoc = pPage->m_pDocument;
   if (!pDoc)
     return;
   pDoc->AddIndirectObject(pStream);
 
   CPDF_Array* pContentArray = nullptr;
-  if (CPDF_Array* pArray = ToArray(pContentObj)) {
+  CPDF_Array* pArray = ToArray(pContentObj);
+  if (pArray) {
     pContentArray = pArray;
     CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
     pContentArray->InsertAt(0, pRef);
   } else if (CPDF_Reference* pReference = ToReference(pContentObj)) {
     CPDF_Object* pDirectObj = pReference->GetDirect();
     if (pDirectObj) {
-      if (CPDF_Array* pArray = pDirectObj->AsArray()) {
-        pContentArray = pArray;
+      CPDF_Array* pObjArray = pDirectObj->AsArray();
+      if (pObjArray) {
+        pContentArray = pObjArray;
         CPDF_Reference* pRef = new CPDF_Reference(pDoc, pStream->GetObjNum());
         pContentArray->InsertAt(0, pRef);
       } else if (pDirectObj->IsStream()) {
         pContentArray = new CPDF_Array();
         pContentArray->AddReference(pDoc, pStream->GetObjNum());
         pContentArray->AddReference(pDoc, pDirectObj->GetObjNum());
         pPageDic->SetAtReference("Contents", pDoc,
                                  pDoc->AddIndirectObject(pContentArray));
       }
     }
   }
 }