Whitespace cleanup.

Props dimadin
fixes #23126


git-svn-id: https://core.svn.wordpress.org/trunk@23308 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Declare wp_rewrite as global in _wp_menu_item_classes_by_context().

Props andrewryno
fixes #7337


git-svn-id: https://core.svn.wordpress.org/trunk@23309 1a063a9b-81f0-0310-95a4-ce76da25c4cd