civicrm/civicrm-core — pull request #1396 by pratik-joshi (2013-08-12 11:15:57+00:00)
Title: CRM-13115 fix

in here :

the if ($v == "amount") { condition was coded in function assignToTemplate() to display 'contribution section' in email receipts for 'zero amount contribution' (so that line item entries can be displayed) relates to issue CRM-12771

Done a little modification to achieve the above pupose :
now the code converts only zero amount value into money format.