(legacy) fix crashreport Call to undefined function get_services() in...

(legacy) fix crashreport Call to undefined function get_services() in /usr/local/www/fbegin.inc on line 38

(cherry picked from commit aa305e7d)

src/www/services_dhcpv6_edit.php

@@ -29,6 +29,7 @@
 */
 require_once("guiconfig.inc");
 require_once("interfaces.inc");
+require_once("services.inc");
 
 function staticmapcmp($a, $b)
 {