use config_get_bool for hide_ssid option in madwifi

SVN-Revision: 6408

package/madwifi/files/lib/wifi/madwifi.sh

@@ -106,9 +106,9 @@ enable_atheros() {
 			iwpriv "$ifname" pureg "$pureg"
 			iwconfig "$ifname" channel "$channel"
 		}
-		
-		config_get hidden "$vif" hidden
-		[ -z "$hidden" ] || iwpriv "$ifname" hide_ssid "$hidden"
+	
+		config_get_bool hidden "$vif" hidden
+		iwpriv "$ifname" hide_ssid "$hidden"
 
 		config_get wds "$vif" wds
 		case "$wds" in