desktop ex: fix runtime warning
desktop ex: fix runtime warning

QCoreApplication::postEvent: Unexpected null receiver

communi/communi-symbian,communi/communi-desktop,communi/communi-desktop,jpnurmi/communi-desktop,communi/communi-symbian,gdamjan/communi-desktop,communi/communi-symbian,sevanteri/communi-desktop,communi/communi-symbian