Do not check pointers before deleting them.

xfa/fxfa/app/xfa_ffwidget.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 "xfa/fxfa/include/xfa_ffwidget.h"
 
 #include <algorithm>
 
@@ skipping 508 matching lines @@
   m_pCloneConvert = NULL;
   m_BitmapAlpha = 255;
   m_FillArgb = 0;
   m_Flags = 0;
   m_pTransformer = NULL;
   m_DeviceHandle = NULL;
   m_BlendType = FXDIB_BLEND_NORMAL;
   m_Result = TRUE;
   m_bPrint = FALSE;
 }
+
 CXFA_ImageRenderer::~CXFA_ImageRenderer() {
-  if (m_pCloneConvert) {
-    delete m_pCloneConvert;
-  }
-  if (m_pTransformer) {
-    delete m_pTransformer;
-  }
-  if (m_DeviceHandle) {
+  delete m_pCloneConvert;
+  delete m_pTransformer;
+  if (m_DeviceHandle)
     m_pDevice->CancelDIBits(m_DeviceHandle);
-  }
 }
+
 FX_BOOL CXFA_ImageRenderer::Start(CFX_RenderDevice* pDevice,
                                   CFX_DIBSource* pDIBSource,
                                   FX_ARGB bitmap_argb,
                                   int bitmap_alpha,
                                   const CFX_Matrix* pImage2Device,
                                   uint32_t flags,
                                   int blendType) {
   m_pDevice = pDevice;
   m_pDIBSource = pDIBSource;
   m_FillArgb = bitmap_argb;
@@ skipping 1408 matching lines @@
       iType != XFA_ELEMENT_Rectangle) {
     return;
   }
   CXFA_StrokeArray strokes;
   if (!(dwFlags & XFA_DRAWBOX_ForceRound) && iType != XFA_ELEMENT_Arc) {
     box.GetStrokes(strokes);
   }
   XFA_BOX_Fill(box, strokes, pGS, rtWidget, pMatrix, dwFlags);
   XFA_BOX_Stroke(box, strokes, pGS, rtWidget, pMatrix, dwFlags);
 }