Fix a bug when removing a port.
diff --git a/src/main/java/net/onrc/onos/ofcontroller/topology/Topology.java b/src/main/java/net/onrc/onos/ofcontroller/topology/Topology.java
index 7d7d739..dbf9ada 100644
--- a/src/main/java/net/onrc/onos/ofcontroller/topology/Topology.java
+++ b/src/main/java/net/onrc/onos/ofcontroller/topology/Topology.java
@@ -121,7 +121,7 @@
 	Link reverseLink = reverseLinksMap.get(portId);
 	if (reverseLink != null) {
 	    // NOTE: reverseLink.myPort is the neighbor's outgoing port
-	    reverseLink.neighbor.removeLink(reverseLink.myPort);
+	    reverseLink.me.removeLink(reverseLink.myPort);
 	    removeReverseLink(reverseLink);
 	}