QMenu: Sloppy menu selection should allow hovering separators

Setting the current action to 0 clears the sloppy region and
closes the submenu if we hover a separator on the way to the
submenu popup. Now, we choose not to while the sloppy delay
timer is running.

Task-number: QTBUG-20094
Change-Id: I9d1b1358fe64c259dc47f35db8fc8f2b19a73153
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>

src/widgets/widgets/qmenu.cpp

@@ -2887,6 +2887,7 @@ void QMenu::mouseMoveEvent(QMouseEvent *e)
     QAction *action = d->actionAt(e->pos());
     if (!action || action->isSeparator()) {
         if (d->hasHadMouse
+            && d->sloppyDelayTimer == 0 // Keep things as they are while we're moving to the submenu
             && (!d->currentAction || (action && action->isSeparator())
                 || !(d->currentAction->menu() && d->currentAction->menu()->isVisible())))
             d->setCurrentAction(0);