Replace some calls to Release() with direct delete, part 1.

core/fxcodec/codec/fx_codec_flate.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 "core/fxcodec/codec/codec_int.h"
 
 #include <algorithm>
 #include <memory>
@@ skipping 732 matching lines @@
   void Create(const uint8_t* src_buf,
               uint32_t src_size,
               int width,
               int height,
               int nComps,
               int bpc,
               int predictor,
               int Colors,
               int BitsPerComponent,
               int Columns);
-  void Destroy() { delete this; }
 
   // CCodec_ScanlineDecoder
   FX_BOOL v_Rewind() override;
   uint8_t* v_GetNextLine() override;
   uint32_t GetSrcOffset() override;
 
   void* m_pFlate;
   const uint8_t* m_SrcBuf;
   uint32_t m_SrcSize;
   uint8_t* m_pScanline;
@@ skipping 233 matching lines @@
                                    uint32_t src_size,
                                    uint8_t*& dest_buf,
                                    uint32_t& dest_size) {
   dest_size = src_size + src_size / 1000 + 12;
   dest_buf = FX_Alloc(uint8_t, dest_size);
   unsigned long temp_size = dest_size;
   FPDFAPI_FlateCompress(dest_buf, &temp_size, src_buf, src_size);
   dest_size = (uint32_t)temp_size;
   return TRUE;
 }