am a9095e07: Remove NPE inside WidgetsListAdapter during monkey actor test b/22518383

* commit 'a9095e07ddd2318ceb81a2794219e07dd112df72':
  Remove NPE inside WidgetsListAdapter during monkey actor test b/22518383
diff --git a/src/com/android/launcher3/widget/WidgetsListAdapter.java b/src/com/android/launcher3/widget/WidgetsListAdapter.java
index d2ea252..a54626a 100644
--- a/src/com/android/launcher3/widget/WidgetsListAdapter.java
+++ b/src/com/android/launcher3/widget/WidgetsListAdapter.java
@@ -87,6 +87,9 @@
 
     @Override
     public int getItemCount() {
+        if (mWidgetsModel == null) {
+            return 0;
+        }
         return mWidgetsModel.getPackageSize();
     }