Merge change 2202 into donut

* changes:
  Fixes external http://code.google.com/p/android/issues/detail?id=2732. ExpandableListView is wrongly assuming that the saved state if of the correct type. A similar bug fix was made in TextView.onRestoreInstanceState() a while ago. This fix simply ensures that the state received is of the right type.

core/java/android/widget/ExpandableListView.java

@@ -1083,6 +1083,11 @@ public class ExpandableListView extends ListView {
 
     @Override
     public void onRestoreInstanceState(Parcelable state) {
+        if (!(state instanceof SavedState)) {
+            super.onRestoreInstanceState(state);
+            return;
+        }
+
         SavedState ss = (SavedState) state;
         super.onRestoreInstanceState(ss.getSuperState());