ws2_32: Fix interface-bound filter to accept locally generated targeted packets.

[Erich E. Hoover]

On Mon, Jun 24, 2013 at 2:33 AM, Jonas Maebe <jonas.maebe at elis.ugent.be> wrote:
> ...
> The added "struct sock_filter ip_memaddr" field doesn't seem to be used.

It's set in the initialization of "generic_interface_filter", which is
used to setup "specific_interface_filter" for individual sockets.
Only the field corresponding to the interface index and, now, the
destination IP get set explicitly in interface_bind(), everything else
is from "generic_interface_filter".

Best,
Erich