Merge change 966 into donut

* changes:
  Fixes 1830181. Tapping disabled items in a ListView would cause the framework to take a code path that wasn't resetting the mMotionCorrection variable if it had been previously set. This would force ListView to apply a scroll to its children even though it was unnecessary. This simple fix prevents the issue by resetting mMotionCorrection appropriately.

core/java/android/widget/AbsListView.java

@@ -1908,6 +1908,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
                     // User clicked on whitespace, or stopped a fling. It is a scroll.
                     createScrollingCache();
                     mTouchMode = TOUCH_MODE_SCROLL;
+                    mMotionCorrection = 0;
                     motionPosition = findMotionRow(y);
                     reportScrollStateChange(OnScrollListener.SCROLL_STATE_TOUCH_SCROLL);
                 }