java-script jobs should be released allocated memory for c++ objects

if a step of a java-script job (spooler_open, spooler_init etc.) ends, the allocated memory for c++ objects is not released in any case.

Code like does not work any more.

function spooler_init(){
o = spooler_task.order;
return true;
}

function spooler_process(){
> //o in spooler_init created
o.title = "test";
spooler_log.info(o.title);
return true;
}