The current code calls accept() without initializing the size parameter
which means the accept call might write too much to the stack.

URL: https://bugs.gentoo.org/486714


Signed-off-by: Tim Comer <comer0@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>