Cleanup: Do not check pointers before deleting them.

core/src/fxge/ge/fx_ge_device.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/fxge/fx_ge.h"
 CFX_RenderDevice::CFX_RenderDevice()
 {
     m_pDeviceDriver = NULL;
     m_pBitmap = NULL;
 }
 CFX_RenderDevice::~CFX_RenderDevice()
 {
-    if (m_pDeviceDriver) {
-        delete m_pDeviceDriver;
-    }
+    delete m_pDeviceDriver;
 }
 void CFX_RenderDevice::SetDeviceDriver(IFX_RenderDeviceDriver* pDriver)
 {
-    if (m_pDeviceDriver) {
-        delete m_pDeviceDriver;
-    }
+    delete m_pDeviceDriver;
     m_pDeviceDriver = pDriver;
     InitDeviceInfo();
 }
 void CFX_RenderDevice::InitDeviceInfo()
 {
     ASSERT(m_pDeviceDriver != NULL);
     m_Width = m_pDeviceDriver->GetDeviceCaps(FXDC_PIXEL_WIDTH);
     m_Height = m_pDeviceDriver->GetDeviceCaps(FXDC_PIXEL_HEIGHT);
     m_bpp = m_pDeviceDriver->GetDeviceCaps(FXDC_BITS_PIXEL);
     m_RenderCaps = m_pDeviceDriver->GetDeviceCaps(FXDC_RENDER_CAPS);
@@ skipping 362 matching lines @@
     return m_pDeviceDriver->StartDIBits(pBitmap, bitmap_alpha, argb, pMatrix, flags, handle, alpha_flag, pIccTransform, blend_mode);
 }
 FX_BOOL CFX_RenderDevice::ContinueDIBits(void* handle, IFX_Pause* pPause)
 {
     return m_pDeviceDriver->ContinueDIBits(handle, pPause);
 }
 void CFX_RenderDevice::CancelDIBits(void* handle)
 {
     m_pDeviceDriver->CancelDIBits(handle);
 }