Configuration class processing uses MetadataReaderFactory for current ResourceLoader

Issue: SPR-14684

spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassPostProcessor.java

@@ -205,6 +205,9 @@ public class ConfigurationClassPostProcessor implements BeanDefinitionRegistryPo
 	public void setResourceLoader(ResourceLoader resourceLoader) {
 		Assert.notNull(resourceLoader, "ResourceLoader must not be null");
 		this.resourceLoader = resourceLoader;
+		if (!this.setMetadataReaderFactoryCalled) {
+			this.metadataReaderFactory = new CachingMetadataReaderFactory(resourceLoader);
+		}
 	}
 
 	@Override