Filter out any undefined events

src/events.js

@@ -53,7 +53,10 @@ var utils = require('../public/src/utils');
 				addUserData(eventsData, 'targetUid', 'targetUser', next);
 			},
 			function (eventsData, next) {
-				eventsData.forEach(function (event) {
+				eventsData.filter(function (element) {
+					return element !== undefined;
+				})
+				.forEach(function (event) {
 					Object.keys(event).forEach(function (key) {
 						if (typeof event[key] === 'string') {
 							event[key] = validator.escape(String(event[key] || ''));
@@ -100,7 +103,9 @@ var utils = require('../public/src/utils');
 				map[user.uid] = user;
 			});
 
-			eventsData.forEach(function (event) {
+			eventsData.filter(function (element) {
+				return element !== undefined;
+			}).forEach(function (event) {
 				if (map[event[field]]) {
 					event[objectName] = map[event[field]];
 				}