$username is not defined. Use the global var.

git-svn-id: file:///tmp/wdn_thm_drupal/branches/drupal-7.x@163 20a16fea-79d4-4915-8869-1ea9d5ebf173

sites/all/modules/unl/unl_cas.module

@@ -98,8 +98,8 @@ function unl_cas_form_alter(&$form, $form_state, $form_id)
         $form['account']['pass']['#type'] = 'hidden';
         $form['account']['current_pass_required_values']['#type'] = 'hidden';
         $form['account']['current_pass']['#type'] = 'hidden';
-        
-        $form['picture']['#description'] = 'To change your picture, visit <a href="http://planetred.unl.edu/pg/profile/unl_' . $username .'">Planet Red</a>.';
+
+        $form['picture']['#description'] = 'To change your picture, visit <a href="http://planetred.unl.edu/pg/profile/unl_' . $GLOBALS['user']->name .'">Planet Red</a>.';
         $form['picture']['picture_delete']['#type'] = 'hidden';
         $form['picture']['picture_upload']['#type'] = 'hidden';
     }