netfilter: x_tables: simplify ip{6}table_mangle_hook()

No need for a special case to handle NF_INET_POST_ROUTING, this is
basically the same handling as for prerouting, input, forward.
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

net/ipv4/netfilter/iptable_mangle.c

@@ -87,10 +87,6 @@ iptable_mangle_hook(void *priv,
 {
 	if (state->hook == NF_INET_LOCAL_OUT)
 		return ipt_mangle_out(skb, state);
-	if (state->hook == NF_INET_POST_ROUTING)
-		return ipt_do_table(skb, state,
-				    state->net->ipv4.iptable_mangle);
-	/* PREROUTING/INPUT/FORWARD: */
 	return ipt_do_table(skb, state, state->net->ipv4.iptable_mangle);
 }
 

net/ipv6/netfilter/ip6table_mangle.c

@@ -83,10 +83,6 @@ ip6table_mangle_hook(void *priv, struct sk_buff *skb,
 {
 	if (state->hook == NF_INET_LOCAL_OUT)
 		return ip6t_mangle_out(skb, state);
-	if (state->hook == NF_INET_POST_ROUTING)
-		return ip6t_do_table(skb, state,
-				     state->net->ipv6.ip6table_mangle);
-	/* INPUT/FORWARD */
 	return ip6t_do_table(skb, state, state->net->ipv6.ip6table_mangle);
 }