Remove autoboxing of message IDs in NettyMessagingManager

Change-Id: I632a8bdd2835247532421f4c91db1dc4d33f1818
diff --git a/core/store/dist/src/main/java/org/onosproject/store/cluster/messaging/impl/NettyMessagingManager.java b/core/store/dist/src/main/java/org/onosproject/store/cluster/messaging/impl/NettyMessagingManager.java
index afef9e9..9a90999 100644
--- a/core/store/dist/src/main/java/org/onosproject/store/cluster/messaging/impl/NettyMessagingManager.java
+++ b/core/store/dist/src/main/java/org/onosproject/store/cluster/messaging/impl/NettyMessagingManager.java
@@ -313,7 +313,7 @@
     @Override
     public CompletableFuture<byte[]> sendAndReceive(Endpoint ep, String type, byte[] payload, Executor executor) {
         checkPermission(CLUSTER_WRITE);
-        Long messageId = messageIdGenerator.incrementAndGet();
+        long messageId = messageIdGenerator.incrementAndGet();
         InternalRequest message = new InternalRequest(preamble,
                 clockService.timeNow(),
                 messageId,