Merge "Fix NullPointerException." into qt-dev
am: 19bc3c67ab

Change-Id: I5c53e569bcdf1a4069370421e0737714d681981a
diff --git a/services/core/java/com/android/server/rollback/RollbackManagerServiceImpl.java b/services/core/java/com/android/server/rollback/RollbackManagerServiceImpl.java
index 03c3830..08c1bb5 100644
--- a/services/core/java/com/android/server/rollback/RollbackManagerServiceImpl.java
+++ b/services/core/java/com/android/server/rollback/RollbackManagerServiceImpl.java
@@ -1289,7 +1289,8 @@
 
 
     private boolean packageVersionsEqual(VersionedPackage a, VersionedPackage b) {
-        return a.getPackageName().equals(b.getPackageName())
+        return a != null && b != null
+            && a.getPackageName().equals(b.getPackageName())
             && a.getLongVersionCode() == b.getLongVersionCode();
     }