Prevent NPE occuring when clearing all notifications.

TODO: possibly move ViewState to the views' tags so that
the lifecycle of the state is tied directly to the view.

Bug: 115567862
Change-Id: I130035738d7d7e6df59f2267dd005d9d3265e90c
Test: Tested on device.

parent 4ca58b43

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

+1 −1

Original line number	Diff line number	Diff line
		@@ -4844,7 +4844,7 @@ public class NotificationStackScrollLayout extends ViewGroup
		activatedChild.makeInactive(false /* animate */);
		}
		updateFooter();
		updateChildren();
		requestChildrenUpdate();
		onUpdateRowStates();

		mEntryManager.updateNotifications();