Fix a bug where the lazy-initialized ActionBar object was being too lazy.

Change-Id: I80dc06deffd1df8cc8ae96fd878d66a101a17086
diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 9e72c1b..c502e6f 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -2417,6 +2417,7 @@
      */
     public boolean onMenuOpened(int featureId, Menu menu) {
         if (featureId == Window.FEATURE_ACTION_BAR) {
+            initActionBar();
             if (mActionBar != null) {
                 mActionBar.dispatchMenuVisibilityChanged(true);
             } else {