[NETFILTER]: nf_conntrack: naming unification

Rename all "conntrack" variables to "ct" for more consistency and
avoiding some overly long lines.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/netfilter/nf_conntrack.h b/include/net/netfilter/nf_conntrack.h
index 14e0cc8..bda78a2 100644
--- a/include/net/netfilter/nf_conntrack.h
+++ b/include/net/netfilter/nf_conntrack.h
@@ -145,7 +145,7 @@
 
 /* Alter reply tuple (maybe alter helper). */
 extern void
-nf_conntrack_alter_reply(struct nf_conn *conntrack,
+nf_conntrack_alter_reply(struct nf_conn *ct,
 			 const struct nf_conntrack_tuple *newreply);
 
 /* Is this tuple taken? (ignoring any belonging to the given
@@ -218,7 +218,7 @@
 /* Update TCP window tracking data when NAT mangles the packet */
 extern void nf_conntrack_tcp_update(struct sk_buff *skb,
 				    unsigned int dataoff,
-				    struct nf_conn *conntrack,
+				    struct nf_conn *ct,
 				    int dir);
 
 /* Fake conntrack entry for untracked connections */