use ‘dn’ in authLDAPGroupAttr

I have a minor modification to authLdap.php for supporting using ‘dn’ in authLDAPGroupAttr.

I don’t know how to submit this changes for merging into main stream. Here is the minor modification:

original:

for ($i = 0; $i < $groups [‘count’]; $i++) {
for ($k = 0; $k < $groups[$i][strtolower($authLDAPGroupAttr)][‘count’]; $k++) {
$grp[] = $groups[$i][strtolower($authLDAPGroupAttr)][$k];
}
}

modified:
// Modified to handle ‘dn’ in authLDAPGroupAttr
for ($i = 0; $i < $groups [‘count’]; $i++) {
if ($authLDAPGroupAttr == “dn”) {
$grp[] = $groups[$i][‘dn’];
} else {
for ($k = 0; $k < $groups[$i][strtolower($authLDAPGroupAttr)][‘count’]; $k++) {
$grp[] = $groups[$i][strtolower($authLDAPGroupAttr)][$k];
}
}
}