Improve the conditions for clearing the Connection Attempt Delay upon connection failure (#12223)

* Improve the conditions for clearing the Connection Attempt Delay upon connection failure

This change addresses a case that was overlooked in ruby/ruby#12087.
In the previous change, the Connection Attempt Delay was cleared at the point of a connection failure only if both of the following conditions were met:

- No other sockets were attempting a connection
- There were addresses still available to start a new connection

In this update, the second condition has been removed.
As a result, if name resolution succeeds after a connection failure and new addresses are obtained, it will be able to immediately attempt a connection to one of them.

If there are no sockets attempting a connection, no addresses available for connection, and name resolution has completed, an exception will still be raised as before.

---

Additionally, the following minor fixes have been made:

* Refactor: Remove unnecessary members

0 files changed, 0 insertions, 0 deletions