Bug 1266797 - Follow-up: Include PR information in reference to upstream source. r=darktrojan DONTBUILD

Depends on D158614

Differential Revision: https://phabricator.services.mozilla.com/D158615

calendar/base/modules/Ical.jsm

@@ -10,6 +10,7 @@
  *
  * Current ical.js git revision: 7fb7b51f1b36d49b576a359ee178d85e6d4b192a
  * plus https://github.com/kewisch/ical.js/pull/541
+ * plus https://github.com/kewisch/ical.js/pull/531
  */
 
 var EXPORTED_SYMBOLS = ["ICAL", "unwrap", "unwrapSetter", "unwrapSingle", "wrapGetter"];