Fix notification reply build on other platforms

src/notifications/ManagerMac.mm

@@ -42,6 +42,11 @@ NotificationsManager::actionInvoked(uint, QString)
 {
     }
 
+void
+NotificationsManager::notificationReplied(uint, QString)
+{
+}
+
 void
 NotificationsManager::notificationClosed(uint, uint)
 {

src/notifications/ManagerWin.cpp

@@ -61,6 +61,7 @@ NotificationsManager::postNotification(const QString &room_id,
 }
 
 void NotificationsManager::actionInvoked(uint, QString) {}
+void NotificationsManager::notificationReplied(uint, QString) {}
 
 void NotificationsManager::notificationClosed(uint, uint) {}