netfilter: nf_conntrack_ipv6: fix nf_log_packet message in icmpv6 conntrack

This patch fixes a trivial typo that was adding a new line at end of
the nf_log_packet() prefix. It also make the logging conditionnal by
adding a LOG_INVALID test.
Signed-off-by: Eric Leblond <eric@inl.fr>
Signed-off-by: Patrick McHardy <kaber@trash.net>

net/ipv6/netfilter/nf_conntrack_proto_icmpv6.c

@@ -201,8 +201,9 @@ icmpv6_error(struct net *net, struct sk_buff *skb, unsigned int dataoff,
 
 	if (net->ct.sysctl_checksum && hooknum == NF_INET_PRE_ROUTING &&
 	    nf_ip6_checksum(skb, hooknum, dataoff, IPPROTO_ICMPV6)) {
-		nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
-			      "nf_ct_icmpv6: ICMPv6 checksum failed\n");
+		if (LOG_INVALID(net, IPPROTO_ICMPV6))
+			nf_log_packet(PF_INET6, 0, skb, NULL, NULL, NULL,
+				      "nf_ct_icmpv6: ICMPv6 checksum failed ");
 		return -NF_ACCEPT;
 	}