reset_connection_cache not deleting on disconnection failure.

[NarinderS]

The reset_connection_cache function doesn't seem to delete a connection if it fails to disconnect first. So for example, if the connection had the wrong credentials, it sits around in the cache forever, unless deleted via delete_session.

The simplest solution would be to delete the connection, no matter if disconnection was successful, but I'm not sure if that would cause other issues.

[jborean93]

Thanks for the report, I'll try and fix it up when I get to looking at the current log of issues soon.