[Bug 57608] Automatically end all processes after a wineserver crash.

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57608

--- Comment #4 from Bernhard Übelacker  ---
(In reply to Bernhard Übelacker from comment #3)
> Would calling `close` on the socket in `do_sigsegv` help?

More specifically, would calling `shutdown_master_socket` be
possible inside `do_sigsegv`?
A short test seems to have finished all processes.
But it would just cover the case when the signal handler is still callable.