Authorization code not erased from storage if it expires before token grant

[bdegoy]

Hi,
I noticed that authorization_codes table was growing regularly.
In normal situation, data is erased by AuthorizationCode::expireAuthorizationCode right after successflul token exchange.
If for any reason authorization code expires before token exchange a line of data remains in table. It happens when I am in step-to-step debugging.
Maybe it's not very important.

[bdegoy]

Sorry, not the right place.