rdpsnd: Fix sending of wave2 PDU
According to MS-RDPEA 2.2.3.10 the Wave2 PDU's header BodySize field
should be equal the size of the PDU minus the header (4 Bytes).
@@ -507,7 +507,7 @@ static UINT rdpsnd_server_send_wave2_pdu(RdpsndServerContext* context,
/* Set stream size */
end = Stream_GetPosition(s);
Stream_SetPosition(s, 2);
- Stream_Write_UINT16(s, end);
+ Stream_Write_UINT16(s, end - 4);
Stream_SetPosition(s, end);
Stream_SealLength(s);
context->block_no = (context->block_no + 1) % 256;
