merge to XFA: Fix -Wnon-virtual-dtor compiler warnings.

core/src/fpdfapi/fpdf_font/ttgsubtable.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/fxge/fx_freetype.h"
 #include "ttgsubtable.h"
 CFX_GlyphMap::CFX_GlyphMap()
@@ skipping 428 matching lines @@
     }
     int error = FXFT_Load_Sfnt_Table(pFont->m_Face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, pFont->m_pGsubData, NULL);
     if (!error && pFont->m_pGsubData) {
         CFX_GSUBTable* pGsubTable = FX_NEW CFX_GSUBTable;
         if (!pGsubTable) {
             return NULL;
         }
         if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->m_pGsubData)) {
             return pGsubTable;
         }
-        delete pGsubTable;
+        pGsubTable->Release();
     }
     return NULL;
 }