Don't reference server.interface_ip_address, if server is not defined

(e.g. running from jsexec).

exec/newslink.js

@@ -130,9 +130,12 @@ var host;
 var port=119;
 var username;
 var password;
-var interface_ip_address=server.interface_ip_address;
+var interface_ip_address=0;
 area = new Array();
 
+if(this.server!=undefined)
+	interface_ip_address=server.interface_ip_address;
+
 /******************************/
 /* Read/Parse the Config File */
 /******************************/