Fix broadcast to a specific user

Bug: 7255777
Bug: 7263657

When userId is neither CURRENT nor ALL, the correct list of receivers
was not being built, due to a typo in ActivityManagerService;

Change-Id: Ib1dc627f0dbd1c91d02c718d2e4d2384ad687d1f
diff --git a/services/java/com/android/server/am/ActivityManagerService.java b/services/java/com/android/server/am/ActivityManagerService.java
index 3428326..35f1b59 100644
--- a/services/java/com/android/server/am/ActivityManagerService.java
+++ b/services/java/com/android/server/am/ActivityManagerService.java
@@ -11745,7 +11745,7 @@
             users = mStartedUserArray;
         } else {
             // Caller wants broadcast to go to one specific user.
-            users = mCurrentUserArray;
+            users = new int[] {userId};
         }
 
         // Figure out who all will receive this broadcast.