MYSQL2 adds closed connection in freeConnection queue #988
Description
While adding connection to freeConnection in release method why there is no check for _closing flag? I am running into issue where the freeconnection queue of the pool is having connection which is marked as _closing and on it's retrieval I am running into can't add command to a connection in closed state. Can you please have a look and confirm if it is the case and issue is being caused due to above mentioned scenario?