make test in winsock segfaulting after patch 4c5b55a0f8...

[Kai Blin]

The following commit breaks the winsock test for me.

commit 4c5b55a0f82e83793814a21eadec8b50d48751f3
Author: Alexandre Julliard 
Date:   Mon Jun 4 18:16:48 2007 +0200

server: Run async I/O APCs from the SIGUSR1 handler.

I have attached the backtrace.

This is currently stopping me from confirming if my WSAStringToAddress patch 
is correct.

Cheers,
Kai