Fix build

Replaces reference to removed bounds rect r2.

Change-Id: I90194c7aa8a1ec0ad3dfc075570668de571652bb
diff --git a/tests/tests/widget/src/android/widget/cts/ListViewTest.java b/tests/tests/widget/src/android/widget/cts/ListViewTest.java
index c5bc191..838f7a8 100644
--- a/tests/tests/widget/src/android/widget/cts/ListViewTest.java
+++ b/tests/tests/widget/src/android/widget/cts/ListViewTest.java
@@ -443,7 +443,7 @@
         });
         mInstrumentation.waitForIdleSync();
         assertEquals(10, mListView.getDividerHeight());
-        assertEquals(10, r2.bottom - r2.top);
+        assertEquals(10, d.getBounds().height());
     }
 
     public void testSetSelection() {