xt_socket: checks for the state of nf_conntrack

xt_socket can use connection tracking, and checks whether it is a module.
Signed-off-by: Laszlo Attila Toth <panther@balabit.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/netfilter/Kconfig

@@ -837,6 +837,7 @@ config NETFILTER_XT_MATCH_SOCKET
 	depends on NETFILTER_TPROXY
 	depends on NETFILTER_XTABLES
 	depends on NETFILTER_ADVANCED
+	depends on !NF_CONNTRACK || NF_CONNTRACK
 	select NF_DEFRAG_IPV4
 	help
 	  This option adds a `socket' match, which can be used to match