Update kernel/classes/ezcontentobjecttreenode.php

eZContentObjectTreeNode::getLimitationList() does not need to know the user permissions when policy limitations are disabled, so don't check it.  This enables using methods like eZContentObjectTreeNode::subTreeByNodeID() to be used in SSO handler functions without an infinite loop.
Update ezcontentobjecttreenode.php

replace 'and' with '&&' in getLimitationList
Merge pull request #541 from jxn/master

Fixed EZP-20302: eZContentObjectTreeNode::getLimitationList() cannot be called by SSO Handler methods without infinite recursion