[IPV4]: Use NIPQUAD_FMT to format ipv4 addresses.

And use %u to format port.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ipv4/ipcomp.c

@@ -179,7 +179,7 @@ static void ipcomp4_err(struct sk_buff *skb, u32 info)
 			      spi, IPPROTO_COMP, AF_INET);
 	if (!x)
 		return;
-	NETDEBUG(KERN_DEBUG "pmtu discovery on SA IPCOMP/%08x/%u.%u.%u.%u\n",
+	NETDEBUG(KERN_DEBUG "pmtu discovery on SA IPCOMP/%08x/" NIPQUAD_FMT "\n",
 		 spi, NIPQUAD(iph->daddr));
 	xfrm_state_put(x);
 }