Merge pull request #1670 from systopia/CRM-13428

prosed fix for CRM-13428

CRM/Contribute/Form/AdditionalInfo.php

@@ -506,6 +506,7 @@ class CRM_Contribute_Form_AdditionalInfo {
         'toName' => $contributorDisplayName,
         'toEmail' => $contributorEmail,
         'isTest' => $form->_mode == 'test',
+        'PDFFilename' => ts('receipt').'.pdf',
       )
     );
 

CRM/Event/Form/Participant.php

@@ -1692,6 +1692,7 @@ loadCampaign( {$this->_eID}, {$eventCampaigns} );
           'valueName' => 'event_offline_receipt',
           'contactId' => $contactID,
           'isTest' => (bool) CRM_Utils_Array::value('is_test', $this->_defaultValues),
+          'PDFFilename' => ts('confirmation').'.pdf',
         );
 
         // try to send emails only if email id is present