Fix NPE in dispatchViewReleased

Bug: 14911975

Change-Id: I9899f6dbe9808dd88dc40261c7d27bf06afebe32
diff --git a/src/com/android/dialer/widget/ViewDragHelper.java b/src/com/android/dialer/widget/ViewDragHelper.java
index 83e8707..6881e4b 100644
--- a/src/com/android/dialer/widget/ViewDragHelper.java
+++ b/src/com/android/dialer/widget/ViewDragHelper.java
@@ -1464,6 +1464,7 @@
      * @param target The child view that is dispatching the nested scroll.
      */
     public void stopNestedScroll(View target) {
+        mCapturedView = target;
         dispatchViewReleased(0, 0);
     }