Merge branch '5.1.x'

spring-core/src/main/java/org/springframework/core/io/DefaultResourceLoader.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 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.
@@ -144,7 +144,7 @@ public class DefaultResourceLoader implements ResourceLoader {
 	public Resource getResource(String location) {
 		Assert.notNull(location, "Location must not be null");
 
-		for (ProtocolResolver protocolResolver : this.protocolResolvers) {
+		for (ProtocolResolver protocolResolver : getProtocolResolvers()) {
 			Resource resource = protocolResolver.resolve(location, this);
 			if (resource != null) {
 				return resource;