Handle data changed during FlingRunnable.

Bug: 5297171
Change-Id: I733ed978bb1d237c992f5d003b212baeac102a3d

Author: jsharkey

core/java/android/widget/AbsListView.java

@@ -3774,6 +3774,10 @@ public void run() {
                 }
                 // Fall through
             case TOUCH_MODE_FLING: {
+                if (mDataChanged) {
+                    layoutChildren();
+                }
+
                 if (mItemCount == 0 || getChildCount() == 0) {
                     endFling();
                     return;