bogus format in ip6mr

ptrdiff_t is %t..., not %Z...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

net/ipv6/ip6mr.c

@@ -197,7 +197,7 @@ static int ip6mr_vif_seq_show(struct seq_file *seq, void *v)
 		const char *name = vif->dev ? vif->dev->name : "none";
 
 		seq_printf(seq,
-			   "%2Zd %-10s %8ld %7ld  %8ld %7ld %05X\n",
+			   "%2td %-10s %8ld %7ld  %8ld %7ld %05X\n",
 			   vif - vif6_table,
 			   name, vif->bytes_in, vif->pkt_in,
 			   vif->bytes_out, vif->pkt_out,