Fixing a bug in DefaultNextObjective copy constructor.

Change-Id: Ifa5383a88795c15cc41fd8416bf27593066e146c
diff --git a/core/api/src/main/java/org/onosproject/net/flowobjective/DefaultNextObjective.java b/core/api/src/main/java/org/onosproject/net/flowobjective/DefaultNextObjective.java
index 01a6f0d..a9d2b2f 100644
--- a/core/api/src/main/java/org/onosproject/net/flowobjective/DefaultNextObjective.java
+++ b/core/api/src/main/java/org/onosproject/net/flowobjective/DefaultNextObjective.java
@@ -178,6 +178,7 @@
             this.type = objective.type();
             this.id = objective.id();
             this.treatments = ImmutableList.copyOf(objective.next());
+            this.listBuilder.addAll(objective.next());
             this.meta = objective.meta();
             this.appId = objective.appId();
             this.op = objective.op();