Fix updateMessage

packages/rocketchat-lib/server/methods/updateMessage.js

+import moment from 'moment'
+
 Meteor.methods({
 	updateMessage(message) {
 
@@ -9,23 +11,24 @@ Meteor.methods({
 
 		const originalMessage = RocketChat.models.Messages.findOneById(message._id);
 
-		if (!originalMessage && !originalMessage._id) {
+		if (!originalMessage || !originalMessage._id) {
 			return;
 		}
 
 		const hasPermission = RocketChat.authz.hasPermission(Meteor.userId(), 'edit-message', message.rid);
 		const editAllowed = RocketChat.settings.get('Message_AllowEditing');
-		const editOwn = originalMessage && originalMessage.u && (originalMessage.u._id === Meteor.userId());
+		const editOwn = originalMessage.u && originalMessage.u._id === Meteor.userId();
 
 		if (!hasPermission && (!editAllowed || !editOwn)) {
 			throw new Meteor.Error('error-action-not-allowed', 'Message editing not allowed', { method: 'updateMessage', action: 'Message_editing' });
 		}
 
 		const blockEditInMinutes = RocketChat.settings.get('Message_AllowEditing_BlockEditInMinutes');
-		if ((blockEditInMinutes != null) && (blockEditInMinutes !== 0)) {
-			let currentTsDiff, msgTs;
-			if (originalMessage.ts != null) { msgTs = moment(originalMessage.ts); }
-			if (msgTs != null) { currentTsDiff = moment().diff(msgTs, 'minutes'); }
+		if (Match.test(blockEditInMinutes, Number) && blockEditInMinutes !== 0) {
+			let currentTsDiff;
+			let msgTs;
+			if (Match.test(originalMessage.ts, Number)) { msgTs = moment(originalMessage.ts); }
+			if (msgTs) { currentTsDiff = moment().diff(msgTs, 'minutes'); }
 			if (currentTsDiff > blockEditInMinutes) {
 				throw new Meteor.Error('error-message-editing-blocked', 'Message editing is blocked', { method: 'updateMessage' });
 			}