X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=restconf%2Frestconf-nb-bierman02%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fnetconf%2Fsal%2Fstreams%2Flisteners%2FAbstractCommonSubscriber.java;h=2a7ba619c59a543fcedd6815912b458977396941;hb=fb750ca3247ee1cea29a7b97aa85c9da0fafb16e;hp=55ea16db73f3364fc73047cdff92b4c12d3006a7;hpb=7e47f4213d56d36fd83c0de1b1e317ee105a6048;p=netconf.git

diff --git a/restconf/restconf-nb-bierman02/src/main/java/org/opendaylight/netconf/sal/streams/listeners/AbstractCommonSubscriber.java b/restconf/restconf-nb-bierman02/src/main/java/org/opendaylight/netconf/sal/streams/listeners/AbstractCommonSubscriber.java
index 55ea16db73..2a7ba619c5 100644
--- a/restconf/restconf-nb-bierman02/src/main/java/org/opendaylight/netconf/sal/streams/listeners/AbstractCommonSubscriber.java
+++ b/restconf/restconf-nb-bierman02/src/main/java/org/opendaylight/netconf/sal/streams/listeners/AbstractCommonSubscriber.java
@@ -50,9 +50,12 @@ abstract class AbstractCommonSubscriber extends AbstractQueryParams implements B
     }
 
     @Override
-    public final void close() throws Exception {
-        this.registration.close();
-        this.registration = null;
+    public final void close() {
+        if (registration != null) {
+            this.registration.close();
+            this.registration = null;
+        }
+
         unregister();
     }
 
@@ -65,7 +68,7 @@ abstract class AbstractCommonSubscriber extends AbstractQueryParams implements B
      */
     public void addSubscriber(final Channel subscriber) {
         if (!subscriber.isActive()) {
-            LOG.debug("Channel is not active between websocket server and subscriber {}" + subscriber.remoteAddress());
+            LOG.debug("Channel is not active between websocket server and subscriber {}", subscriber.remoteAddress());
         }
         final Event event = new Event(EventType.REGISTER);
         event.setSubscriber(subscriber);