Expanding vertical tab causes issues for Nodesymlinks module

Expanding the revisioning vertical tab and collapsing the menu tab on the node add/edit form causes this issue #1760860: Nodesymlinks form should not appear on content types that don't allow menu links for the Nodesymlinks module. On line 38 of revisioning.pages.inc, $form['menu']['#collapsed'] is set to TRUE without first checking if the menu tab exists. I'll provide a patch that checks for the existence of the menu tab before collapsing.