tun/tap: use paren's with sizeof

Although sizeof is an operator in C. The kernel coding style convention
is to always use it like a function and add parenthesis.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/tun.c

@@ -2737,7 +2737,7 @@ static int tun_queue_resize(struct tun_struct *tun)
 	int n = tun->numqueues + tun->numdisabled;
 	int ret, i;
 
-	arrays = kmalloc(sizeof *arrays * n, GFP_KERNEL);
+	arrays = kmalloc_array(n, sizeof(*arrays), GFP_KERNEL);
 	if (!arrays)
 		return -ENOMEM;