Fixing crash with invalid current page.

Change-Id: I36e76176b6172a747a6526d96b82c9870b56067c
diff --git a/src/com/android/launcher3/PagedView.java b/src/com/android/launcher3/PagedView.java
index 1fee4c2..9b891e4 100644
--- a/src/com/android/launcher3/PagedView.java
+++ b/src/com/android/launcher3/PagedView.java
@@ -515,7 +515,7 @@
      * re-enable scrolling.
      */
     void stopScrolling() {
-        mCurrentPage = mNextPage;
+        mCurrentPage = getNextPage();
         forceFinishScroller();
     }