net: c101: add blank line after declarations

This patch fixes the checkpatch error about missing a blank line
after declarations.
Signed-off-by: NPeng Li <lipeng321@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/wan/c101.c

@@ -416,6 +416,7 @@ static void __exit c101_cleanup(void)
 
 	while (card) {
 		card_t *ptr = card;
+
 		card = card->next_card;
 		unregister_hdlc_device(port_to_dev(ptr));
 		c101_destroy_card(ptr);