Bug fix - Do not create new next-objective if there are no
non-duplicate buckets to add.

Change-Id: I5bbf3f22225ae91efeed7f5987e771de209f725c
diff --git a/src/main/java/org/onosproject/segmentrouting/RoutingRulePopulator.java b/src/main/java/org/onosproject/segmentrouting/RoutingRulePopulator.java
index 8d757aa..95f07b2 100644
--- a/src/main/java/org/onosproject/segmentrouting/RoutingRulePopulator.java
+++ b/src/main/java/org/onosproject/segmentrouting/RoutingRulePopulator.java
@@ -591,7 +591,7 @@
         } else if (!isBos && !this.srManager.getMplsEcmp()) {
             ns = NeighborSet.neighborSet(true, nextHops, true);
         }
-        log.info("Trying to get a nextObjId for mpls rule on device:{} to ns:{}",
+        log.debug("Trying to get a nextObjId for mpls rule on device:{} to ns:{}",
                   deviceId, ns);
         // If BoS == True, all forwarding is via L3 ECMP group.
         // If Bos == False, the forwarding can be via MPLS-ECMP group or through