Fix bug 3408834 - actionbar stays gone when leaving reader in

lightsout mode

Fix an opportunity for race conditions when the action bar is
shown/hidden rapidly.

Change-Id: I91c0666cad3afd8a4d870d642f971949fba0d333

core/java/com/android/internal/app/ActionBarImpl.java

@@ -480,12 +480,12 @@ public class ActionBarImpl extends ActionBar {
 
     @Override
     public void show() {
-        if (mContainerView.getVisibility() == View.VISIBLE) {
-            return;
-        }
         if (mCurrentAnim != null) {
             mCurrentAnim.end();
         }
+        if (mContainerView.getVisibility() == View.VISIBLE) {
+            return;
+        }
         mContainerView.setVisibility(View.VISIBLE);
         mContainerView.setAlpha(0);
         AnimatorSet anim = new AnimatorSet();