Excplitcly globalized call to $wp later in wp-settings.php

Props xknown, fixes #26867.

Built from https://develop.svn.wordpress.org/trunk@26997


git-svn-id: http://core.svn.wordpress.org/trunk@26874 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-settings.php

@@ -331,7 +331,7 @@ if ( ! defined( 'WP_INSTALLING' ) || 'wp-activate.php' === $pagenow ) {
 do_action( 'after_setup_theme' );
 
 // Set up current user.
-$wp->init();
+$GLOBALS['wp']->init();
 
 /**
  * Fires after WordPress has finished loading but before any headers are sent.