wireless: iwlwifi3945/4965 - fix incorrect counting of memory

This patch does fix incorrect counting of memory allocated by kmalloc.
It seems that could lead to allocated memory overrun and corrupt
nearlaid memory area.
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Acked-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -6628,7 +6628,7 @@ static void iwl3945_bg_request_scan(struct work_struct *data)
 	 * that based on the direct_mask added to each channel entry */
 	scan->tx_cmd.len = cpu_to_le16(
 		iwl3945_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
-			IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
+			IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
 	scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
 	scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
 	scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;

drivers/net/wireless/iwlwifi/iwl4965-base.c

@@ -7046,7 +7046,7 @@ static void iwl4965_bg_request_scan(struct work_struct *data)
 	 * that based on the direct_mask added to each channel entry */
 	scan->tx_cmd.len = cpu_to_le16(
 		iwl4965_fill_probe_req(priv, (struct ieee80211_mgmt *)scan->data,
-			IWL_MAX_SCAN_SIZE - sizeof(scan), 0));
+			IWL_MAX_SCAN_SIZE - sizeof(*scan), 0));
 	scan->tx_cmd.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK;
 	scan->tx_cmd.sta_id = priv->hw_setting.bcast_sta_id;
 	scan->tx_cmd.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;