Cleanup: Do not check pointers before deleting them.

fpdfsdk/src/pdfwindow/PWL_ListBox.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/pdfwindow/PDFWindow.h"
 #include "../../include/pdfwindow/PWL_Wnd.h"
 #include "../../include/pdfwindow/PWL_ListBox.h"
 #include "../../include/pdfwindow/PWL_Utils.h"
@@ skipping 72 matching lines @@
         m_bHoverSel(FALSE),
         m_pFillerNotify(NULL)
 {
         m_pList = IFX_List::NewList();
 
         ASSERT(m_pList != NULL);
 }
 
 CPWL_ListBox::~CPWL_ListBox()
 {
-        IFX_List::DelList(m_pList);
-
-        if (m_pListNotify)
-        {
-                delete m_pListNotify;
-                m_pListNotify = NULL;
-        }
+    IFX_List::DelList(m_pList);
+    delete m_pListNotify;
+    m_pListNotify = NULL;
 }
 
 CFX_ByteString CPWL_ListBox::GetClassName() const
 {
         return "CPWL_ListBox";
 }
 
 void CPWL_ListBox::OnCreated()
 {
         if (m_pList)
         {
-                if (m_pListNotify) delete m_pListNotify;
+                delete m_pListNotify;
 
                 m_pList->SetFontMap(GetFontMap());
                 m_pList->SetNotify(m_pListNotify = new CPWL_List_Notify(this));
 
                 SetHoverSel(HasFlag(PLBS_HOVERSEL));
                 m_pList->SetMultipleSel(HasFlag(PLBS_MULTIPLESEL));
                 m_pList->SetFontSize(GetCreationParam().fFontSize);
 
                 m_bHoverSel = HasFlag(PLBS_HOVERSEL);
         }
 }
 
 void CPWL_ListBox::OnDestroy()
 {
-        if (m_pListNotify)
-        {
-                delete m_pListNotify;
-                m_pListNotify = NULL;
-        }
+    delete m_pListNotify;
+    m_pListNotify = NULL;
 }
 
 void CPWL_ListBox::GetThisAppearanceStream(CFX_ByteTextBuf & sAppStream)
 {
         CPWL_Wnd::GetThisAppearanceStream(sAppStream);
 
         CFX_ByteTextBuf sListItems;
 
         if (m_pList)
         {
@@ skipping 455 matching lines @@
         else
         {
                 m_pList->OnVK_UP(IsSHIFTpressed(nFlag),IsCTRLpressed(nFlag));
         }
 
         FX_BOOL bExit = FALSE;
         OnNotifySelChanged(FALSE,bExit, nFlag);
         return TRUE;
 }