Polishing

spring-context/src/main/java/org/springframework/context/annotation/AdviceMode.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2011 the original author or authors.
+ * Copyright 2002-2017 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,6 +27,9 @@ package org.springframework.context.annotation;
  * @see org.springframework.transaction.annotation.EnableTransactionManagement#mode()
  */
 public enum AdviceMode {
+
 	PROXY,
+
 	ASPECTJ
+
 }

spring-messaging/src/main/java/org/springframework/messaging/simp/broker/SimpleBrokerMessageHandler.java

@@ -364,7 +364,9 @@ public class SimpleBrokerMessageHandler extends AbstractBrokerMessageHandler {
 					getClientOutboundChannel().send(reply);
 				}
 				catch (Throwable ex) {
-					logger.error("Failed to send " + message, ex);
+					if (logger.isErrorEnabled()) {
+						logger.error("Failed to send " + message, ex);
+					}
 				}
 				finally {
 					SessionInfo info = this.sessions.get(subscriptionEntry.getKey());