Merge "fix 'int android.view.View.getHeight()' on a null object reference"

am: 4add708b91

Change-Id: I3aa9c2da09a1447f79edb6a228f88cdc731bd605

core/java/android/widget/AbsListView.java

@@ -7700,6 +7700,11 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
                 mLastSeenPos = firstPos;
 
                 final int childCount = getChildCount();
+
+                if (childCount <= 0) {
+                    return;
+                }
+
                 final int position = mTargetPos;
                 final int lastPos = firstPos + childCount - 1;