Unable to change membership payment with translated (none US english) CiviCRM

The function getContactPledges() in CRM/Pledge/BAO/Pledge.php retrueves a list of 'contribution_status' by 'label' instead of 'name'! This way the retrieved values are localized and do not match the english constants in the function.

If I try to change a membership payment I get the following SQL error:

Array
(
[callback] => Array
(
[0] => CRM_Core_Error
[1] => handle
)

[code] => -2
[message] => DB Error: syntax error
[mode] => 16
[debug_info] =>
SELECT civicrm_pledge.id id
FROM civicrm_pledge
WHERE civicrm_pledge.status_id IN (,,)
AND civicrm_pledge.contact_id = 2
[nativecode=1064 ** You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ',)
AND civicrm_pledge.contact_id = 2' at line 3]
[type] => DB_Error

Attached is a patch for this bug.

Cheers
Matthias