Adj-In RIB code fix

Change-Id: Ice870ab1aff068cc27a5337a3f4ff7090a53d84d
diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java
index caf27e3..806efe5 100644
--- a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/NextHop.java
@@ -130,4 +130,10 @@
                 .add("nextHop", nextHop)
                 .toString();
     }
+
+    @Override
+    public int compareTo(Object o) {
+        // TODO Auto-generated method stub
+        return 0;
+    }
 }
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