buttons: make all button handler scripts return 0

this is required by the new button timeout feature

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 46471

package/base-files/files/etc/rc.button/failsafe

@@ -1,3 +1,5 @@
 #!/bin/sh
 
 [ "${TYPE}" = "switch" ] || echo ${BUTTON} > /tmp/failsafe_button
+
+return 0

package/base-files/files/etc/rc.button/reset

@@ -16,3 +16,5 @@ then
 	echo "FACTORY RESET" > /dev/console
 	jffs2reset -y && reboot &
 fi
+
+return 0

package/base-files/files/etc/rc.button/rfkill

@@ -28,3 +28,5 @@ esac
 config_foreach wifi_rfkill_set wifi-device
 uci commit wireless
 wifi up
+
+return 0

package/network/services/hostapd/files/wps-hotplug.sh

@@ -7,3 +7,5 @@ if [ "$ACTION" = "pressed" -a "$BUTTON" = "wps" ]; then
 		hostapd_cli -i "$socket" wps_pbc
 	done
 fi
+
+return 0