Fixed an issue where HUNS could have a background am: 1791f50134

am: 3109ba4140

Change-Id: Ic5164a9b74b97b8d516ab594df0c41c357cbfe10

packages/SystemUI/src/com/android/systemui/statusbar/stack/NotificationStackScrollLayout.java

@@ -2002,6 +2002,7 @@ public class NotificationStackScrollLayout extends ViewGroup
         if (!mIsExpanded) {
             mBackgroundBounds.top = 0;
             mBackgroundBounds.bottom = 0;
+            return;
         }
         ActivatableNotificationView firstView = mFirstVisibleBackgroundChild;
         int top = 0;