Always show title of floating dockwidget.

Task-number:QTCREATORBUG-13325
Change-Id: I07ca3c6061855dcef31071ad3c143413d370b3aa
Reviewed-by: Eike Ziller <eike.ziller@theqtcompany.com>
Reviewed-by: Christian Stenger <christian.stenger@digia.com>

src/libs/utils/fancymainwindow.cpp

@@ -324,8 +324,7 @@ void DockWidget::handleMouseTimeout()
 
 void DockWidget::handleToplevelChanged(bool floating)
 {
-    if (!floating)
-        m_titleBar->setActive(false);
+    m_titleBar->setActive(floating);
 }