fix ractor-locking around rb_ractor_thread_list()
With locking a ractor, rb_ary_push() can call RB_VM_LOCK_ENTER() and it violates an assertion: should not acquire ractor-lock.
Added by ko1 (Koichi Sasada) over 4 years ago
fix ractor-locking around rb_ractor_thread_list()
With locking a ractor, rb_ary_push() can call RB_VM_LOCK_ENTER()
and it violates an assertion: should not acquire ractor-lock.