ar71xx: fix indentation in diag.sh

Replace the leading spaces with tabs.

Signed-off-by: Gabor Juhos <[email protected]>

SVN-Revision: 39342

target/linux/ar71xx/base-files/etc/diag.sh

@@ -105,9 +105,9 @@ get_status_led() {
 	rb-411 | rb-411u | rb-433 | rb-433u | rb-450 | rb-450g | rb-493)
 		status_led="rb4xx:yellow:user"
 		;;
-       rb-750)
-               status_led="rb750:green:act"
-               ;;
+	rb-750)
+		status_led="rb750:green:act"
+		;;
 	routerstation | routerstation-pro)
 		status_led="ubnt:green:rf"
 		;;