Cancelling the current drag when customization filter type changes to prevent crashes.

Change-Id: Iaa3f2598325950769d38ad1d6e390ab06ea194d7

src/com/android/launcher2/CustomizePagedView.java

@@ -312,6 +312,7 @@ public class CustomizePagedView extends PagedViewWithDraggableItems
 
     public void setCustomizationFilter(CustomizationType filterType) {
         mCustomizationType = filterType;
+        cancelDragging();
         if (getChildCount() > 0) {
             setCurrentPage(0);
             updateCurrentPageScroll();