Fix a bug where an action bar could be created when it should not be.

     */

    private void initActionBar() {

        Window window = getWindow();

        // Initializing the window decor can change window feature flags.

        // Make sure that we have the correct set before performing the test below.

        window.getDecorView();

        if (isChild() || !window.hasFeature(Window.FEATURE_ACTION_BAR) || mActionBar != null) {

            return;

        }