Send expose when we get a geometry change.

Change-Id: I4c0c5130e6513fb4031e847be01feff3653f256e
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>

src/plugins/platforms/cocoa/qnsview.mm

@@ -241,6 +241,7 @@ static QTouchDevice *touchDevice = 0;
     // Send a geometry change event to Qt, if it's ready to handle events
     if (!m_platformWindow->m_inConstructor) {
         QWindowSystemInterface::handleGeometryChange(m_window, geometry);
+        QWindowSystemInterface::handleExposeEvent(m_window, geometry);
         QWindowSystemInterface::flushWindowSystemEvents();
     }
 }