Make implicit intent immutable.

(cherry picked from commit e42611f83cc72d22ed99fe3a8b79386d76ae5fa6)

Test: make
Fix: 154627439
Change-Id: Ifee830595bb145aede4dad1d9e42a20e54b6be66
Merged-In: Ifee830595bb145aede4dad1d9e42a20e54b6be66
(cherry picked from commit 7aae8cce330cb9b8ebca7b68da3abcd8e2d5a272)
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/InstantAppNotifier.java b/packages/SystemUI/src/com/android/systemui/statusbar/notification/InstantAppNotifier.java
index 3886f62..ffe51ca 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/InstantAppNotifier.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/InstantAppNotifier.java
@@ -282,7 +282,7 @@
                                 mContext,
                                 0,
                                 new Intent(Intent.ACTION_VIEW).setData(Uri.parse(helpUrl)),
-                                0,
+                                PendingIntent.FLAG_IMMUTABLE,
                                 null,
                                 user)
                         : null;