AppWidgetServiceImpl:fix NPE in pruneWidgetStateLocked mthod .

  When the hostsPackageForUser method return true,No nonNull judgment is made on the provider var which may be a null var.

Bug: 339747311
Test: manual
Change-Id: I00f8c12b5dec00eac6e50e2ef755742db3fe4521

1 files changed, 3 insertions, 1 deletions

diff --git a/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java b/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java
index 522aa6703b51..412d202cdff6 100644
--- a/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java
+++ b/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java
@@ -5681,7 +5681,9 @@ class AppWidgetServiceImpl extends IAppWidgetService.Stub implements WidgetBacku
                         // so we tear it down in anticipation of it (possibly) being
                         // reconstructed due to the restore
                         host.widgets.remove(widget);
-                        provider.widgets.remove(widget);
+                        if (provider != null) {
+                            provider.widgets.remove(widget);
+                        }
                         // Check if we need to destroy any services (if no other app widgets are
                         // referencing the same service)
                         decrementAppWidgetServiceRefCount(widget);