ZF-7196: Zend_Session_Abstract::_namespaceUnset() always unsets the whole namespace

Description

There is a bug on line 123 in Zend_Session_Abstract class file. Instead of unsetting just the variable within a namespace, the whole namespace is unset.

Comments

this patch (for 1.9.8) fixes the behavior

Although no unit test is contained - the attached patch actually resolves issue

Attached patch with fix and test but I think ZF-8600 should be fixed before.

This issue requires ZF-8600 to be fixed.

Fixed in r23373.