Remove typdefs for pointer types in fx_system.h

fpdfsdk/src/fpdf_dataavail.cpp

Index: fpdfsdk/src/fpdf_dataavail.cpp
diff --git a/fpdfsdk/src/fpdf_dataavail.cpp b/fpdfsdk/src/fpdf_dataavail.cpp
index f31685f6d8083f0f562f6b7036e85e3710077df5..88b00dead7d51100a9726a4716cafb4478e48076 100644
--- a/fpdfsdk/src/fpdf_dataavail.cpp
+++ b/fpdfsdk/src/fpdf_dataavail.cpp
@@ -50,7 +50,7 @@ public:
 
 	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()