Delegate sendMessage

Issue: SPR-14139

spring-websocket/src/main/java/org/springframework/web/socket/handler/WebSocketSessionDecorator.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2014 the original author or authors.
+ * Copyright 2002-2016 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.
@@ -145,7 +145,7 @@ public class WebSocketSessionDecorator implements WebSocketSession {
 
 	@Override
 	public void sendMessage(WebSocketMessage<?> message) throws IOException {
-
+		this.delegate.sendMessage(message);
 	}
 
 	@Override