Deprecated function call ?

Hi, It is related to issue related to deprecated functions

I have found in Debug.log
[22-Oct-2017 12:18:51 UTC] PHP Notice: WC_Cart::get_checkout_url is deprecated since version 2.5! Use wc_get_checkout_url instead. in /wp-includes/functions.php on line 3831

It was related to quick buy at:
/wp-content/plugins/woocommerce-quick-buy/includes/class-frontend.php line 140 &142 return WC()->cart->get_cart_url();

I wondered if it should not be replaced by

return wc_get_checkout_url();

https://docs.woocommerce.com/wc-apidocs/function-wc_get_checkout_url.html
I am maybe wrong please check. Thank you for your great work.