- f.vkDestroyDebugReportCallback(priv->instance, priv->debug_report_callback, 0);
- f.vkDestroyInstance(priv->instance, 0);
+ f.vkDestroyDebugReportCallback(priv->instance, priv->debug_report_callback, nullptr);
+ f.vkDestroyInstance(priv->instance, nullptr);