Don't bother checking pointers before delete[] and FX_Free().

core/src/fxge/dib/fx_dib_composite.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"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "dib_int.h"
 const uint8_t _color_sqrt[256] = {
@@ skipping 4175 matching lines @@
   }
 }
 CFX_ScanlineCompositor::CFX_ScanlineCompositor() {
   m_pSrcPalette = NULL;
   m_pCacheScanline = NULL;
   m_CacheSize = 0;
   m_bRgbByteOrder = FALSE;
   m_BlendType = FXDIB_BLEND_NORMAL;
 }
 CFX_ScanlineCompositor::~CFX_ScanlineCompositor() {
-  if (m_pSrcPalette) {
-    FX_Free(m_pSrcPalette);
-  }
-  if (m_pCacheScanline) {
-    FX_Free(m_pCacheScanline);
-  }
+  FX_Free(m_pSrcPalette);
+  FX_Free(m_pCacheScanline);
 }
 FX_BOOL CFX_ScanlineCompositor::Init(FXDIB_Format dest_format,
                                      FXDIB_Format src_format,
                                      int32_t width,
                                      FX_DWORD* pSrcPalette,
                                      FX_DWORD mask_color,
                                      int blend_type,
                                      FX_BOOL bClip,
                                      FX_BOOL bRgbByteOrder,
                                      int alpha_flag,
@@ skipping 791 matching lines @@
 }
 CFX_BitmapComposer::CFX_BitmapComposer() {
   m_pScanlineV = NULL;
   m_pScanlineAlphaV = NULL;
   m_pClipScanV = NULL;
   m_pAddClipScan = NULL;
   m_bRgbByteOrder = FALSE;
   m_BlendType = FXDIB_BLEND_NORMAL;
 }
 CFX_BitmapComposer::~CFX_BitmapComposer() {
-  if (m_pScanlineV) {
-    FX_Free(m_pScanlineV);
-  }
-  if (m_pScanlineAlphaV) {
-    FX_Free(m_pScanlineAlphaV);
-  }
-  if (m_pClipScanV) {
-    FX_Free(m_pClipScanV);
-  }
-  if (m_pAddClipScan) {
-    FX_Free(m_pAddClipScan);
-  }
+  FX_Free(m_pScanlineV);
+  FX_Free(m_pScanlineAlphaV);
+  FX_Free(m_pClipScanV);
+  FX_Free(m_pAddClipScan);
 }
 void CFX_BitmapComposer::Compose(CFX_DIBitmap* pDest,
                                  const CFX_ClipRgn* pClipRgn,
                                  int bitmap_alpha,
                                  FX_DWORD mask_color,
                                  FX_RECT& dest_rect,
                                  FX_BOOL bVertical,
                                  FX_BOOL bFlipX,
                                  FX_BOOL bFlipY,
                                  FX_BOOL bRgbByteOrder,
@@ skipping 166 matching lines @@
   }
   src_alpha_scan = m_pScanlineAlphaV;
   dest_alpha_scan = dest_alpha_buf;
   if (dest_alpha_scan) {
     for (i = 0; i < m_DestHeight; i++) {
       *dest_alpha_scan = *src_alpha_scan++;
       dest_alpha_scan += y_alpha_step;
     }
   }
 }