Adding code to enable GUI failover.

Change-Id: I8423f17349411d24332db8670840438d0d8ec8ba
diff --git a/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandlerBase.java b/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandlerBase.java
index 2137ffa..ade30ea 100644
--- a/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandlerBase.java
+++ b/web/gui/src/main/java/org/onosproject/ui/impl/TopologyViewMessageHandlerBase.java
@@ -305,7 +305,7 @@
                 .put("id", node.id().toString())
                 .put("ip", node.ip().toString())
                 .put("online", clusterService.getState(node.id()) == ACTIVE)
-                .put("uiAttached", event.subject().equals(clusterService.getLocalNode()))
+                .put("uiAttached", node.equals(clusterService.getLocalNode()))
                 .put("switches", switchCount);
 
         ArrayNode labels = mapper.createArrayNode();