Guard against null object in scheduleNotifyUpdateAppWidgetLocked

Bug: 30085290
Change-Id: I4f12e1def98dff7e50b4d25a7d23e81bdbe0b7bd
diff --git a/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java b/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java
index 6defd0f..9d3889b 100644
--- a/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java
+++ b/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java
@@ -1905,7 +1905,7 @@
         SomeArgs args = SomeArgs.obtain();
         args.arg1 = widget.host;
         args.arg2 = widget.host.callbacks;
-        args.arg3 = updateViews.clone();
+        args.arg3 = (updateViews != null) ? updateViews.clone() : null;
         args.arg4 = requestTime;
         args.argi1 = widget.appWidgetId;