Fix bug 3248786 - silly monkeys.

Change-Id: I41306cae06a7b4fd3852e0760ae668c8d6eacc5d
diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 0a2e031..a0a6b42 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -2363,7 +2363,11 @@
      */
     public boolean onMenuOpened(int featureId, Menu menu) {
         if (featureId == Window.FEATURE_ACTION_BAR) {
-            mActionBar.dispatchMenuVisibilityChanged(true);
+            if (mActionBar != null) {
+                mActionBar.dispatchMenuVisibilityChanged(true);
+            } else {
+                Log.e(TAG, "Tried to open action bar menu with no action bar");
+            }
         }
         return true;
     }