Method ~Delayed_insert

sql/sql_insert.cc:2706–2729

    DBUG_VOID_RETURN;
  }
  ~Delayed_insert() override
  {
    /* The following is not really needed, but just for safety */
    delayed_row *row;
    while ((row=rows.get()))
      delete row;
    if (table)
    {
      close_thread_tables(&thd);
      thd.mdl_context.release_transactional_locks(&thd);
    }
    mysql_mutex_destroy(&mutex);
    mysql_cond_destroy(&cond);
    mysql_cond_destroy(&cond_client);

    server_threads.erase(&thd);
    mysql_mutex_assert_owner(&LOCK_delayed_insert);
    delayed_insert_threads--;

    my_free(thd.query());
    thd.reset_query_inner();
    thd.security_ctx->user= 0;
    thd.security_ctx->host= 0;
  }

  /* The following is for checking when we can delete ourselves */
  inline void lock()