Polish "Use try-with-resources to close resources automatically"

- Apply code formatting
- Use try-with-resources in many other places that were missed in the
  pull request

Closes gh-8045

spring-boot-devtools/src/main/java/org/springframework/boot/devtools/livereload/LiveReloadServer.java

@@ -282,16 +282,10 @@ public class LiveReloadServer {
 
 		private void handle() throws Exception {
 			try {
-				try {
-					OutputStream outputStream = this.socket.getOutputStream();
-					try {
-						Connection connection = createConnection(this.socket,
-								this.inputStream, outputStream);
-						runConnection(connection);
-					}
-					finally {
-						outputStream.close();
-					}
+				try (OutputStream outputStream = this.socket.getOutputStream()) {
+					Connection connection = createConnection(this.socket,
+							this.inputStream, outputStream);
+					runConnection(connection);
 				}
 				finally {
 					this.inputStream.close();

spring-boot-devtools/src/main/java/org/springframework/boot/devtools/tunnel/client/TunnelClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -152,16 +152,12 @@ public class TunnelClient implements SmartInitializingSingleton {
 		public void run() {
 			try {
 				while (this.acceptConnections) {
-					SocketChannel socket = this.serverSocketChannel.accept();
-					try {
+					try (SocketChannel socket = this.serverSocketChannel.accept()) {
 						handleConnection(socket);
 					}
 					catch (AsynchronousCloseException ex) {
 						// Connection has been closed. Keep the server running
 					}
-					finally {
-						socket.close();
-					}
 				}
 			}
 			catch (Exception ex) {