align to checkstyle

spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/AbstractGracefulServiceRegistration.java

@@ -58,7 +58,7 @@ public abstract class AbstractGracefulServiceRegistration<R extends Registration
 		this.serviceRegistry = serviceRegistry;
 	}
 
-	protected AbstractGracefulServiceRegistration(ServiceRegistry<R> serviceRegistry, 
+	protected AbstractGracefulServiceRegistration(ServiceRegistry<R> serviceRegistry,
 												GracefulServiceRegistrationProperties properties) {
 		this.serviceRegistry = serviceRegistry;
 		this.properties = properties;

spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationAutoConfiguration.java

@@ -12,7 +12,7 @@ import org.springframework.context.annotation.Import;
  */
 @Configuration(proxyBeanMethods = false)
 @Import(GracefulServiceRegistrationConfiguration.class)
-@ConditionalOnProperty(value = "spring.cloud.service-registry.graceful-registration.enabled")
+@ConditionalOnProperty(value = "spring.cloud.service-registry.graceful-registration.enabled", matchIfMissing = true)
 public class GracefulServiceRegistrationAutoConfiguration {
 
 	@Autowired(required = false)

spring-cloud-starter-tencent-polaris-discovery/src/main/java/com/tencent/cloud/polaris/registry/graceful/GracefulServiceRegistrationConfiguration.java

@@ -6,7 +6,7 @@ import org.springframework.context.annotation.Configuration;
 
 @Configuration(proxyBeanMethods = false)
 @EnableConfigurationProperties(GracefulServiceRegistrationProperties.class)
-@ConditionalOnProperty(value = "spring.cloud.service-registry.graceful-registration.enabled")
+@ConditionalOnProperty(value = "spring.cloud.service-registry.graceful-registration.enabled", matchIfMissing = true)
 public class GracefulServiceRegistrationConfiguration {
 
 }