Get rid of FX_LPCSTR cast.

core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.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_parser.h"
 #include "../../../include/fpdfapi/fpdf_module.h"
 #include "../../../include/fxcodec/fx_codec.h"
 #include <limits.h>
@@ skipping 420 matching lines @@
             dest_buf[i] = PDFDocEncoding[src_data[i]];
         }
         result.ReleaseBuffer(src_len);
     } else {
         return (*pCharMap->m_GetWideString)(pCharMap, CFX_ByteString((FX_LPCSTR)src_data, src_len));
     }
     return result;
 }
 CFX_WideString PDF_DecodeText(const CFX_ByteString& bstr, CFX_CharMap* pCharMap)
 {
-    return PDF_DecodeText((FX_LPCBYTE)(FX_LPCSTR)bstr, bstr.GetLength(), pCharMap);
+    return PDF_DecodeText((FX_LPCBYTE)bstr.c_str(), bstr.GetLength(), pCharMap);
 }
 CFX_ByteString PDF_EncodeText(FX_LPCWSTR pString, int len, CFX_CharMap* pCharMap)
 {
     if (len == -1) {
         len = (FX_STRSIZE)FXSYS_wcslen(pString);
     }
     CFX_ByteString result;
     if (pCharMap == NULL) {
         FX_LPSTR dest_buf1 = result.GetBuffer(len);
         int i;
@@ skipping 79 matching lines @@
     }
 }
 FX_DWORD FlateDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
 {
     CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule();
     if (pEncoders) {
         return pEncoders->GetFlateModule()->FlateOrLZWDecode(FALSE, src_buf, src_size, FALSE, 0, 0, 0, 0, 0, dest_buf, dest_size);
     }
     return 0;
 }