Cleanup: Do not check pointers before deleting them.

core/src/fpdfapi/fpdf_render/fpdf_render_cache.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/fpdfapi/fpdf_render.h"
 #include "../../../include/fpdfapi/fpdf_pageobj.h"
 #include "../../../include/fxge/fx_ge.h"
 #include "../fpdf_page/pageint.h"
@@ skipping 170 matching lines @@
     , m_pRenderStatus(NULL)
     , m_pDocument(pDoc)
     , m_pStream(pStream)
     , m_pCachedBitmap(NULL)
     , m_pCachedMask(NULL)
     , m_dwCacheSize(0)
 {
 }
 CPDF_ImageCache::~CPDF_ImageCache()
 {
-    if (m_pCachedBitmap) {
-        delete m_pCachedBitmap;
-        m_pCachedBitmap = NULL;
-    }
-    if (m_pCachedMask) {
-        delete m_pCachedMask;
-        m_pCachedMask = NULL;
-    }
+    delete m_pCachedBitmap;
+    m_pCachedBitmap = NULL;
+    delete m_pCachedMask;
+    m_pCachedMask = NULL;
 }
 void CPDF_ImageCache::Reset(const CFX_DIBitmap* pBitmap)
 {
-    if (m_pCachedBitmap) {
-        delete m_pCachedBitmap;
-    }
+    delete m_pCachedBitmap;
     m_pCachedBitmap = NULL;
     if (pBitmap) {
         m_pCachedBitmap = pBitmap->Clone();
     }
     CalcSize();
 }
 void CPDF_PageRenderCache::ClearImageData()
 {
     FX_POSITION pos = m_ImageCaches.GetStartPosition();
     while (pos) {
@@ skipping 135 matching lines @@
 }
 void CPDF_Document::ClearRenderFont()
 {
     if (m_pDocRender) {
         CFX_FontCache* pCache = m_pDocRender->GetFontCache();
         if (pCache) {
             pCache->FreeCache(FALSE);
         }
     }
 }