netfilter: xt_TPROXY: fix invflags check in tproxy_tg6_check()

We have to check for IP6T_INV_PROTO in invflags, instead of flags.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Acked-by: Balazs Scheidler <bazsi@balabit.hu>
1 file changed