Polish contribution

See gh-24205

spring-aop/src/main/java/org/springframework/aop/framework/AdvisedSupport.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2019 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.
@@ -287,9 +287,8 @@ public class AdvisedSupport extends ProxyConfig implements Advised {
 		if (advisor instanceof IntroductionAdvisor) {
 			IntroductionAdvisor ia = (IntroductionAdvisor) advisor;
 			// We need to remove introduction interfaces.
-			Class<?>[] interfaces = ia.getInterfaces();
-			for (Class<?> iface : interfaces) {
-				removeInterface(iface);
+			for (Class<?> ifc : ia.getInterfaces()) {
+				removeInterface(ifc);
 			}
 		}