Update checkstyle to version 6.19

Change-Id: I32787f2a5f4f4b17fd4cdcf9bd2eb3903dcecfff
diff --git a/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java b/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
index 7d13ec5..03d4f63 100644
--- a/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
+++ b/apps/test/messaging-perf/src/main/java/org/onosproject/messagingperf/MessagingPerfApp.java
@@ -268,7 +268,9 @@
         communicationService.<Data>addSubscriber(
                 TEST_UNICAST_MESSAGE_TOPIC,
                 decoder,
-                d -> { received.incrementAndGet(); },
+                d -> {
+                    received.incrementAndGet();
+                },
                 messageReceivingExecutor);
 
         communicationService.<Data, Data>addSubscriber(