(svn r1175) -Fix: [ 1086375 ] Backup-order-list was not closed with an OT_NOTHING,

resulting in order-lists mixing together (maybe tnx to Darkvater, not 
sure though..)

order_cmd.c

@@ -327,6 +327,8 @@ void BackupVehicleOrders(Vehicle *v, BackuppedOrders *bak)
 		do {
 			*os++ = *sched++;
 		} while (sched->type != OT_NOTHING);
+		/* Make sure the last item is OT_NOTHING */
+		os->type = OT_NOTHING;
 	}
 }