Polish contribution

See gh-17962

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurationSorter.java

@@ -136,8 +136,7 @@ class AutoConfigurationSorter {
 		}
 
 		Set<String> getClassesRequestedAfter(String className) {
-			Set<String> setOfClassesRequestedAfter = get(className).getAfter();
-			Set<String> classesRequestedAfter = new LinkedHashSet<>(setOfClassesRequestedAfter);
+			Set<String> classesRequestedAfter = new LinkedHashSet<>(get(className).getAfter());
 			this.classes.forEach((name, autoConfigurationClass) -> {
 				if (autoConfigurationClass.getBefore().contains(className)) {
 					classesRequestedAfter.add(name);

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/jmx/ParentAwareNamingStrategy.java

@@ -17,7 +17,6 @@
 package org.springframework.boot.autoconfigure.jmx;
 
 import java.util.Hashtable;
-import java.util.Map;
 
 import javax.management.MalformedObjectNameException;
 import javax.management.ObjectName;
@@ -58,8 +57,7 @@ public class ParentAwareNamingStrategy extends MetadataNamingStrategy implements
 	@Override
 	public ObjectName getObjectName(Object managedBean, String beanKey) throws MalformedObjectNameException {
 		ObjectName name = super.getObjectName(managedBean, beanKey);
-		Map<String, String> keyPropertyList = name.getKeyPropertyList();
-		Hashtable<String, String> properties = new Hashtable<>(keyPropertyList);
+		Hashtable<String, String> properties = new Hashtable<>(name.getKeyPropertyList());
 		if (this.ensureUniqueRuntimeObjectNames) {
 			properties.put("identity", ObjectUtils.getIdentityHexString(managedBean));
 		}