[2/2] ws2_32, WS2_sendto: Avoid error when sending zero byte buffer (try 2)

[Mike Kaplinskiy]

Several things:
 - Don't set errno. For good practice it's more or less read-only.
 - All the tests have to pass after each patch, so if your tests fail
(which they probably should) without your patch, add todo_wine and
then remove them in the followup patch (or just send the tests
second).
 - The tests you provided pass without this patch so I'm not convinced
that your fix is necessary. errno 107 = ENOTCONN, so while 0 length
sends work just fine, they only work when non-zero sends also work.
i.e. invalid sends get turned to valid sends on windows when the
length is 0. It might be better to test calling WSASendTo with 0
length on unconnected tcp (or udp if tcp doesn't work) sockets.

Good luck,
Mike.

On Sat, Aug 14, 2010 at 5:45 AM, Wolfgang Schwotzer
<wolfgang.schwotzer at gmx.net> wrote:
> This solves #19397.
>
>
>
>
>