iwlwifi: fix compilation warning in 'iwl-4965.c'

This patch fixes a compilation warning in 'iwl-4965.c'.

"warning: format ‘%d’ expects type ‘int’, but argument 3 has type ‘long unsigned int’"

Signed-off-by: Miguel Botón <mboton@gmail.com
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-4965.c

@@ -3616,7 +3616,7 @@ static void iwl4965_add_radiotap(struct iwl4965_priv *priv,
 	if (skb_headroom(skb) < sizeof(*iwl4965_rt)) {
 		if (net_ratelimit())
 			printk(KERN_ERR "not enough headroom [%d] for "
-			       "radiotap head [%d]\n",
+			       "radiotap head [%zd]\n",
 			       skb_headroom(skb), sizeof(*iwl4965_rt));
 		return;
 	}