civicrm phonebank report fails on missing sql value

When accessing the phone bank report, we get the following backtrace:

/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/CRM/Core/Error.php,
backtrace, 159
, handle,
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/PEAR.php,
call_user_func, 931
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/DB.php,
PEAR_Error, 968
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/PEAR.php,
DB_Error, 564
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/DB/common.php,
raiseError, 1903
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/DB/mysql.php,
raiseError, 898
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/DB/mysql.php,
mysqlRaiseError, 327
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/DB/common.php,
simpleQuery, 1216
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/DB/DataObject.php,
query, 2420
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/packages/DB/DataObject.php,
_query, 1606
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/CRM/Core/DAO.php,
query, 145
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/CRM/Core/DAO.php,
query, 873
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm_engage/Engage/Report/Form/List.php,
executeQuery, 184
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm_engage/Engage/Report/Form/CallList.php,
__construct, 46
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/CRM/Core/Controller.php,
__construct, 395
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/CRM/Core/Controller/Simple.php,
addPages, 81
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/CRM/Utils/Wrapper.php,
__construct, 90
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/CRM/Report/Page/Report.php,
run, 84
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/CRM/Core/Invoke.php,
run, 223
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/sites/all/modules/civicrm/drupal/civicrm.module,
invoke, 363
, civicrm_invoke,
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/includes/menu.inc,
call_user_func_array, 348
/var/aegir/platforms/rossi-ourpowerbase-6.20-3.4.1/index.php,
menu_execute_active_handler, 18

And this error:

Database Error Code: 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 '' at line 1, 1064 Additional Details:

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

[code] => -2
[message] => DB Error: syntax error
[mode] => 16
[debug_info] => SELECT label, value FROM civicrm_option_value_en_US WHERE option_group_id= [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 '' at line 1]
[type] => DB_Error
[user_info] => SELECT label, value FROM civicrm_option_value_en_US WHERE option_group_id= [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 '' at line 1]
[to_string] => [db_error: message="DB Error: syntax error" code=-2 mode=callback callback=CRM_Core_Error::handle prefix="" info="SELECT label, value FROM civicrm_option_value_en_US WHERE option_group_id= [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 '' at line 1]"]

The problem seems to be a case-sensitivity issue. The following patch is tested in 3.4.1:

Index: List.php
===================================================================
— List.php (revision 35031)
+++ List.php (working copy)
@@ -179,7 +179,7 @@
$dao = CRM_Core_DAO::executeQuery( $query );
$dao->fetch( );
$this->_partyCol = $dao->column_name;

• $partyOptGrp = $dao->option_group_ID;
  + $partyOptGrp = $dao->option_group_id;
  $query = "SELECT label, value"
  . " FROM civicrm_option_value"
  . " WHERE option_group_id={$partyOptGrp}";