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

core/src/fpdfapi/fpdf_edit/fpdf_edit_image.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_module.h"
 #include "../../../include/fpdfapi/fpdf_page.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include "../../../include/fpdfapi/fpdf_render.h"
@@ skipping 260 matching lines @@
                            FALSE);
       } else if (pBitmap->GetBPP() >= 8 && pBitmap->GetPalette() != NULL) {
         CFX_DIBitmap* pNewBitmap = new CFX_DIBitmap();
         pNewBitmap->Copy(pBitmap);
         pNewBitmap->ConvertFormat(FXDIB_Rgb);
         SetImage(pNewBitmap, iCompress, pFileWrite, pFileRead);
         if (pDict) {
           pDict->Release();
           pDict = NULL;
         }
-        if (dest_buf) {
-          FX_Free(dest_buf);
-          dest_buf = NULL;
-        }
+        FX_Free(dest_buf);
+        dest_buf = NULL;
         dest_size = 0;
         delete pNewBitmap;
         return;
       } else {
         if (bUseMatte) {
           CFX_DIBitmap* pNewBitmap = new CFX_DIBitmap();
           pNewBitmap->Create(BitmapWidth, BitmapHeight, FXDIB_Argb);
           uint8_t* dst_buf = pNewBitmap->GetBuffer();
           int32_t src_offset = 0;
           for (int32_t row = 0; row < BitmapHeight; row++) {
@@ skipping 78 matching lines @@
   }
   if (!bStream) {
     m_pStream->InitStream(dest_buf, dest_size, pDict);
   } else {
     pFileWrite->Flush();
     m_pStream->InitStream(pFileRead, pDict);
   }
   m_bIsMask = pBitmap->IsAlphaMask();
   m_Width = BitmapWidth;
   m_Height = BitmapHeight;
-  if (dest_buf) {
-    FX_Free(dest_buf);
-  }
+  FX_Free(dest_buf);
 }
 void CPDF_Image::ResetCache(CPDF_Page* pPage, const CFX_DIBitmap* pBitmap) {
   pPage->GetRenderCache()->ResetBitmap(m_pStream, pBitmap);
 }