Date expired discounts still applied if code already in cart

[nfourtythree]

Description

If a user enters a discount code into the cart before and end date and then returns when the cart is still active but the discount end date has passed.

There is an error message that is displayed stating an out of date code but the adjustments are still being made to the cart.

Steps to reproduce

1. Create discount code with an end date in the future
2. Create order using the discount code when valid
3. Change discount code end date with a date in the past

Additional info

• Craft version: Craft Pro 3.0.33
• PHP version: 2.0.0-beta.13.1
• Database driver & version: MySQL 5.7.22

I know that versions are a bit out-of-date, this is the plan to be rectified in the near future. So apologies if this has already been fixed.