Use get_current_user_id() instead of $user_ID in user-edit.php.

props kovshenin.
fixes #26274.

Built from https://develop.svn.wordpress.org/trunk@27069


git-svn-id: http://core.svn.wordpress.org/trunk@26942 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/user-edit.php

@@ -235,7 +235,7 @@ if ( ! IS_PROFILE_PAGE ) {
 <?php endif; ?>
 <p>
 <input type="hidden" name="from" value="profile" />
-<input type="hidden" name="checkuser_id" value="<?php echo $user_ID ?>" />
+<input type="hidden" name="checkuser_id" value="<?php echo get_current_user_id(); ?>" />
 </p>
 
 <h3><?php _e('Personal Options'); ?></h3>