Remove typdefs for pointer types in fx_system.h

fpdfsdk/src/fpdf_dataavail.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 "../../public/fpdf_dataavail.h"
 #include "../include/fsdk_define.h"
 
 extern void ProcessParseError(FX_DWORD err_code);
@@ skipping 32 matching lines @@
                 m_pFileAccess = pFile;
         }
 
         virtual FX_FILESIZE             GetSize()
         {
                 return m_pFileAccess->m_FileLen; 
         }
 
         virtual FX_BOOL                 ReadBlock(void* buffer, FX_FILESIZE offset, size_t size)
         {
-                return m_pFileAccess->m_GetBlock(m_pFileAccess->m_Param, offset, (FX_LPBYTE)buffer, size);
+                return m_pFileAccess->m_GetBlock(m_pFileAccess->m_Param, offset, (uint8_t*)buffer, size);
         }
 
         virtual void                    Release()
         {
         }
 
 private:
         FPDF_FILEACCESS*                m_pFileAccess;
 };
 
@@ skipping 92 matching lines @@
         CFPDF_DownloadHintsWrap hints_wrap(hints);
         return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsFormAvail(&hints_wrap);
 }
 
 DLLEXPORT FPDF_BOOL STDCALL FPDFAvail_IsLinearized(FPDF_AVAIL avail)
 {
                 if (avail == NULL) return -1;
         return ((CFPDF_DataAvail*)avail)->m_pDataAvail->IsLinearizedPDF();
 
 }