The world should not end if a server has no peer. Let's return FALSE instead.

The world should not end if a server has no peer.  Let's return FALSE instead.
GAddress_copy should copy truthfully, not mangle the result if things are
going badly.  An earlier incarnation of the above.
Disable events before closing the socket, though just disabling them at all
will do.  This was the cause of the nasty 'crash on fail to bind' behaviour
that people have been seeing.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16309 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775