Adj-In RIB code fix

Change-Id: Ice870ab1aff068cc27a5337a3f4ff7090a53d84d
diff --git a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/AreaIDTlv.java b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/AreaIDTlv.java
index 7b5cabe..842c6f0 100644
--- a/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/AreaIDTlv.java
+++ b/bgp/bgpio/src/main/java/org/onosproject/bgpio/types/AreaIDTlv.java
@@ -18,8 +18,6 @@
 import java.util.Objects;
 
 import org.jboss.netty.buffer.ChannelBuffer;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 
 import com.google.common.base.MoreObjects;
 
@@ -38,8 +36,6 @@
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      */
 
-    protected static final Logger log = LoggerFactory.getLogger(AreaIDTlv.class);
-
     public static final short TYPE = 514;
     public static final short LENGTH = 4;
 
@@ -116,6 +112,14 @@
     }
 
     @Override
+    public int compareTo(Object o) {
+        if (this.equals(o)) {
+            return 0;
+        }
+        return ((Integer) (this.areaID)).compareTo((Integer) (((AreaIDTlv) o).areaID));
+    }
+
+    @Override
     public String toString() {
         return MoreObjects.toStringHelper(getClass())
                 .add("Type", TYPE)