fix login url

classes/shibd_discofeed.class.php

@@ -141,8 +141,7 @@ class shibd_discofeed
                     // see also https://help.switch.ch/aai/guides/discovery/login-link-composer/
                     $sUrl = $this->_sShibLoginUrl
                         . '?entityID='. urlencode($sEntityId) 
-                        . "&target=" . urlencode($sEntityId) 
-                        . "&target=" . urlencode($this->SELFURL.($aConfig['return-url']??''))
+                        . "&target=" . urlencode($this->SELFURL.($this->aConfig['return-url']??''))
                         ;
     
                     $sKey=$sLabel;