Avoid canonicalName call for already-seen bean name

Issue: SPR-14433
(cherry picked from commit 5890758)

spring-beans/src/main/java/org/springframework/beans/factory/support/DefaultSingletonBeanRegistry.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2015 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.
@@ -449,10 +449,10 @@ public class DefaultSingletonBeanRegistry extends SimpleAliasRegistry implements
 	}
 
 	private boolean isDependent(String beanName, String dependentBeanName, Set<String> alreadySeen) {
-		String canonicalName = canonicalName(beanName);
 		if (alreadySeen != null && alreadySeen.contains(beanName)) {
 			return false;
 		}
+		String canonicalName = canonicalName(beanName);
 		Set<String> dependentBeans = this.dependentBeanMap.get(canonicalName);
 		if (dependentBeans == null) {
 			return false;