don't show the dialog until it's position is settled which fixes the "i'm seeing flashes of kickoff at the top of the screen when i first open it". this also happens to fix a bug where sometimes a popup would show in the taskbar

BUG:177675

svn path=/trunk/KDE/kdelibs/; revision=901338

popupapplet.cpp

@@ -467,9 +467,9 @@ void PopupAppletPrivate::togglePopup()
         if (dialog->isVisible()) {
             dialog->hide();
         } else {
-            dialog->show();
             updateDialogPosition();
             KWindowSystem::setState(dialog->winId(), NET::SkipTaskbar | NET::SkipPager);
+            dialog->show();
         }
 
         dialog->clearFocus();