don't try to set up wpa if hostapd is not installed

SVN-Revision: 7005

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

@@ -194,6 +194,7 @@ enable_atheros() {
 		iwconfig "$ifname" essid "$ssid"
 		case "$mode" in
 			ap)
+				if eval "type hostapd_setup_vif" 2>/dev/null >/dev/null; then
 					hostapd_setup_vif "$vif" madwifi || {
 						echo "enable_atheros($device): Failed to set up wpa for interface $ifname" >&2
 						# make sure this wifi interface won't accidentally stay open without encryption
@@ -201,6 +202,7 @@ enable_atheros() {
 						wlanconfig "$ifname" destroy
 						continue
 					}
+				fi
 			;;
 			wds|sta)
 				case "$enc" in