Free scope node in prism

vm_eval.c

@@ -1772,6 +1772,7 @@ pm_eval_make_iseq(VALUE src, VALUE fname, int line,
     while (prev) {
         pm_scope_node_t *next = prev->previous;
         pm_constant_id_list_free(&prev->locals);
+        pm_scope_node_destroy(prev);
         ruby_xfree(prev);
         prev = next;
     }