[NETFILTER]: nf_conntrack: replace NF_CT_DUMP_TUPLE macro indrection by function call

Directly call IPv4 and IPv6 variants where the address family is
easily known.

Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
diff --git a/net/ipv4/netfilter/nf_nat_pptp.c b/net/ipv4/netfilter/nf_nat_pptp.c
index 3a1e6d6..da3d91a 100644
--- a/net/ipv4/netfilter/nf_nat_pptp.c
+++ b/net/ipv4/netfilter/nf_nat_pptp.c
@@ -72,7 +72,7 @@
 	}
 
 	pr_debug("trying to unexpect other dir: ");
-	NF_CT_DUMP_TUPLE(&t);
+	nf_ct_dump_tuple_ip(&t);
 	other_exp = nf_ct_expect_find_get(&t);
 	if (other_exp) {
 		nf_ct_unexpect_related(other_exp);