This change caused a regression. If a description is present for a recurring processor, the recurring payment fields never load on the back-office contribution form.
This is because line 442 fails since the array elements in $this->_processors have been modified w/ addition of the description.
$this->_recurPaymentProcessors = array_intersect_assoc($this->_processors, $recurring);
https://github.com/civicrm/civicrm-core/pull/5713 fixes the problem with recurring contribution fields not showing up when they should.
Another couple of places for this
https://github.com/civicrm/civicrm-core/pull/5826
Additional PR to be merged before closing again.
https://github.com/civicrm/civicrm-core/pull/5577