Prevents memory leaks by correctly detaching views in AbsListView.

AbsListView can reject views from the recycler's scrap heap but when that
happens the rejected view is not detached from the parent. This can be pretty
bad in the case of TextView since it prevents them from unregistering their
OnPreDrawListeners.

core/java/android/widget/AbsListView.java

@@ -3560,6 +3560,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
             // into the scrap heap
             int viewType = lp.viewType;
             if (!shouldRecycleViewType(viewType)) {
+                removeDetachedView(scrap, false);
                 return;
             }