ONOS-2412 Fixing CLI & GUI inconcistency for reporting device count.

Change-Id: I219332cb1513c49e6f0fbbbbd0fd49d05277e2e9
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 eb4f6dc..a8e112a 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
@@ -388,7 +388,7 @@
         return new PropertyPanel("ONOS Summary", "node")
             .addProp(Properties.VERSION, version)
             .addSeparator()
-            .addProp(Properties.DEVICES, topology.deviceCount())
+            .addProp(Properties.DEVICES,  deviceService.getDeviceCount())
             .addProp(Properties.LINKS, topology.linkCount())
             .addProp(Properties.HOSTS, hostService.getHostCount())
             .addProp(Properties.TOPOLOGY_SSCS, topology.clusterCount())