for (i = 0; i < workers_num; ++i) {
/* private gray queue is inited by the thread itself */
- mono_mutex_init (&workers_data [i].stealable_stack_mutex, NULL);
+ mono_mutex_init (&workers_data [i].stealable_stack_mutex);
workers_data [i].stealable_stack_fill = 0;
if (sgen_get_major_collector ()->alloc_worker_data)