Fixed Bug on line 68 of admin-ui.php

Line 68 throws the following exception when updating feeds;

Fatal Error: Call to a member function uri() on a non-object in C:\path\to\feedwordpress\plugin\admin-ui.php on line 68

So I changed it from [ $effectiveUrl = $link->uri(array('fetch' => true)); ] to [ $effectiveUrl = $this->link->uri(array('fetch' => true)); ] and it works.