dev #71949 fix fatal errors

library/ZendAfi/Auth/Adapter/CommSigb.php

@@ -115,8 +115,8 @@ class ZendAfi_Auth_Adapter_CommSigb implements Zend_Auth_Adapter_Interface {
     $bibs = $this->_getBibsToAuthenticateTo($user);
 
     foreach($bibs as $bib)
-      if($user = $this->_getUserFromSigbWithLibrary($user, $bib))
-        return $user;
+      if($user_found = $this->_getUserFromSigbWithLibrary($user, $bib))
+        return $user_found;
 
     return  null;
   }