Consistent Class array vs vararg declarations (and related polishing)

(cherry picked from commit 3b810f3)

spring-websocket/src/main/java/org/springframework/web/socket/config/annotation/WebMvcStompEndpointRegistry.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 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.
@@ -94,7 +94,7 @@ public class WebMvcStompEndpointRegistry implements StompEndpointRegistry {
 		WebSocketHandler actual = WebSocketHandlerDecorator.unwrap(handler);
 		if (!(actual instanceof SubProtocolWebSocketHandler)) {
 			throw new IllegalArgumentException("No SubProtocolWebSocketHandler in " + handler);
-		};
+		}
 		return (SubProtocolWebSocketHandler) actual;
 	}