Polish "Add support for @ResponseStatus in DefaultErrorAttributes"

Closes gh-14744

Author: snicoll

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/reactive/error/DefaultErrorAttributes.java

@@ -94,33 +94,26 @@ private HttpStatus determineHttpStatus(Throwable error) {
 		if (error instanceof ResponseStatusException) {
 			return ((ResponseStatusException) error).getStatus();
 		}
-
 		ResponseStatus responseStatus = AnnotatedElementUtils
 				.findMergedAnnotation(error.getClass(), ResponseStatus.class);
-
 		if (responseStatus != null) {
 			return responseStatus.code();
 		}
-
 		return HttpStatus.INTERNAL_SERVER_ERROR;
 	}
 
 	private String determineMessage(Throwable error) {
 		if (error instanceof WebExchangeBindException) {
 			return error.getMessage();
 		}
-
 		if (error instanceof ResponseStatusException) {
 			return ((ResponseStatusException) error).getReason();
 		}
-
 		ResponseStatus responseStatus = AnnotatedElementUtils
 				.findMergedAnnotation(error.getClass(), ResponseStatus.class);
-
 		if (responseStatus != null) {
 			return responseStatus.reason();
 		}
-
 		return error.getMessage();
 	}