Polish

Author: philwebb

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/cloudfoundry/reactive/ReactiveCloudFoundryActuatorAutoConfiguration.java

@@ -167,7 +167,7 @@ static WebFilterChainPostProcessor webFilterChainPostProcessor(
 
 	private static class WebFilterChainPostProcessor implements BeanPostProcessor {
 
-		private Supplier<PathMappedEndpoints> pathMappedEndpoints;
+		private final Supplier<PathMappedEndpoints> pathMappedEndpoints;
 
 		WebFilterChainPostProcessor(ObjectProvider<CloudFoundryWebFluxEndpointHandlerMapping> handlerMapping) {
 			this.pathMappedEndpoints = SingletonSupplier