Bug 394887, fix up test because reflow occurs later

toolkit/content/tests/widgets/test_panelfrommenu.xul

@@ -54,7 +54,7 @@ function menuClosed()
 {
   // the panel will be open at this point, but the popupshown event
   // still needs to fire
-  is($("panel").state, "open", "panel is open after menu hide");
+  is($("panel").state, "showing", "panel is open after menu hide");
   is($("menu").firstChild.state, "closed", "menu is closed after menu hide");
 }