Suppress warnings for resource leaks

spring-test/src/main/java/org/springframework/test/context/web/ServletTestExecutionListener.java

 /*
- * Copyright 2002-2012 the original author or authors.
+ * Copyright 2002-2013 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.
@@ -126,6 +126,7 @@ public class ServletTestExecutionListener extends AbstractTestExecutionListener
 				RequestContextHolder.setRequestAttributes(servletWebRequest);
 
 				if (wac instanceof ConfigurableApplicationContext) {
+					@SuppressWarnings("resource")
 					ConfigurableApplicationContext configurableApplicationContext = (ConfigurableApplicationContext) wac;
 					ConfigurableListableBeanFactory bf = configurableApplicationContext.getBeanFactory();
 					bf.registerResolvableDependency(MockHttpServletResponse.class, response);