distributed link fixes

Change-Id: Iefede001a76834599a5629d843a4325283e42711
diff --git a/providers/lldp/src/test/java/org/onlab/onos/provider/lldp/impl/LLDPLinkProviderTest.java b/providers/lldp/src/test/java/org/onlab/onos/provider/lldp/impl/LLDPLinkProviderTest.java
index 4410aaf..ff692d6 100644
--- a/providers/lldp/src/test/java/org/onlab/onos/provider/lldp/impl/LLDPLinkProviderTest.java
+++ b/providers/lldp/src/test/java/org/onlab/onos/provider/lldp/impl/LLDPLinkProviderTest.java
@@ -134,7 +134,7 @@
         deviceListener.event(portEvent(DeviceEvent.Type.PORT_ADDED, DID2, port(DID2, 1, false)));
 
 
-        assertNull("DPID exists",
+        assertNull("DeviceId exists",
                    provider.discoverers.get(DID2));
     }
 
@@ -394,7 +394,7 @@
 
         @Override
         public Iterable<Device> getDevices() {
-            return devices.values();
+            return Collections.EMPTY_LIST;
         }
 
         @Override