[IPV4] igmp: Fixup struct ip_mc_list::multiaddr type

All users except two expect 32-bit big-endian value. One is of

	->multiaddr = ->multiaddr

variety. And last one is "%08lX".
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/igmp.h

@@ -169,7 +169,7 @@ struct ip_sf_list
 struct ip_mc_list
 {
 	struct in_device	*interface;
-	unsigned long		multiaddr;
+	__be32			multiaddr;
 	struct ip_sf_list	*sources;
 	struct ip_sf_list	*tomb;
 	unsigned int		sfmode;

net/ipv4/igmp.c

@@ -2361,7 +2361,7 @@ static int igmp_mc_seq_show(struct seq_file *seq, void *v)
 		}
 
 		seq_printf(seq,
-			   "\t\t\t\t%08lX %5d %d:%08lX\t\t%d\n",
+			   "\t\t\t\t%08X %5d %d:%08lX\t\t%d\n",
 			   im->multiaddr, im->users,
 			   im->tm_running, im->tm_running ?
 			   jiffies_to_clock_t(im->timer.expires-jiffies) : 0,