ws2_32, WS2_send: Avoid error if total bytes sent is 0

[Mike Kaplinskiy]

On Mon, Jul 26, 2010 at 3:05 PM, Wolfgang Schwotzer
<wolfgang.schwotzer at gmx.net> wrote:
> This fixes bug #19397
>
>
>
>

I don't think that's the right place for the fix. You should probably
put it in WS2_sendto. Also could you add some tests to verify that
this is the behavior for all protocols, not just IrDA?

Mike.