qcam: Fix timers not emitting timeout signal

The timer signal was never emitted in QtEventDispatcher::timerEvent(),
this results in timers not working as designed running under the Qt
event loop. Fix this by emitting the signal on timeout.

Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

src/qcam/qt_event_dispatcher.cpp

@@ -132,6 +132,7 @@ void QtEventDispatcher::timerEvent(QTimerEvent *event)
 {
 	Timer *timer = timers_[event->timerId()];
 	timer->stop();
+	timer->timeout.emit(timer);
 }
 
 void QtEventDispatcher::processEvents()