Topic listeners should return identity hash code

src/main/java/org/redisson/RedissonPatternTopic.java

@@ -69,7 +69,7 @@ public class RedissonPatternTopic<M> implements RPatternTopic<M> {
         synchronized (entry) {
             if (entry.isActive()) {
                 entry.addListener(name, pubSubListener);
-                return pubSubListener.hashCode();
+                return System.identityHashCode(pubSubListener);
             }
         }
         // entry is inactive trying add again

src/main/java/org/redisson/RedissonTopic.java

@@ -80,7 +80,7 @@ public class RedissonTopic<M> implements RTopic<M> {
     private int addListener(RedisPubSubListener<M> pubSubListener) {
         Future<PubSubConnectionEntry> future = commandExecutor.getConnectionManager().subscribe(codec, name, pubSubListener);
         future.syncUninterruptibly();
-        return pubSubListener.hashCode();
+        return System.identityHashCode(pubSubListener);
     }
 
     @Override