Polish contribution

See gh-18736

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/http/ApiVersion.java

@@ -75,7 +75,7 @@ public enum ApiVersion {
 			try {
 				return valueOf(type.toUpperCase());
 			}
-			catch (IllegalArgumentException ignored) {
+			catch (IllegalArgumentException ex) {
 			}
 		}
 		return null;

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/web/PathMappedEndpoints.java

@@ -65,13 +65,13 @@ public class PathMappedEndpoints implements Iterable<PathMappedEndpoint> {
 
 	private Map<EndpointId, PathMappedEndpoint> getEndpoints(Collection<EndpointsSupplier<?>> suppliers) {
 		Map<EndpointId, PathMappedEndpoint> endpoints = new LinkedHashMap<>();
-		for (EndpointsSupplier<?> supplier : suppliers) {
+		suppliers.forEach((supplier) -> {
 			supplier.getEndpoints().forEach((endpoint) -> {
 				if (endpoint instanceof PathMappedEndpoint) {
 					endpoints.put(endpoint.getEndpointId(), (PathMappedEndpoint) endpoint);
 				}
 			});
-		}
+		});
 		return Collections.unmodifiableMap(endpoints);
 	}