rootDse() does not use in-memory cache

[alecpl]

Looks to me that true || here needs to be removed:

Net_LDAP2/Net/LDAP2.php

Line 1505 in 0cbfdad

if (true || !array_key_exists($attrs_signature, $this->_rootDSE_cache)) {

[hbeni]

Like it is now, always a fresh object is fetched.
I don't remember the reason for this, but it may be a left over artifact from development.

From the first glance, I think too that the true should be removed, however this needs rigid testing before changing.