No need to check for the presence of a current user in a privileged ajax action. see #23665.



git-svn-id: http://core.svn.wordpress.org/trunk@23889 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Replace $user_id removed in [23889] with a direct function call. see #23665.



git-svn-id: http://core.svn.wordpress.org/trunk@23890 1a063a9b-81f0-0310-95a4-ce76da25c4cd