fix costyle squid:S1161 (#518)

diff --git a/dubbo-spring-boot-autoconfigure/src/main/java/org/apache/dubbo/spring/boot/autoconfigure/DubboRelaxedBinding2AutoConfiguration.java b/dubbo-spring-boot-autoconfigure/src/main/java/org/apache/dubbo/spring/boot/autoconfigure/DubboRelaxedBinding2AutoConfiguration.java
index 2b57273..85f8ffd 100644
--- a/dubbo-spring-boot-autoconfigure/src/main/java/org/apache/dubbo/spring/boot/autoconfigure/DubboRelaxedBinding2AutoConfiguration.java
+++ b/dubbo-spring-boot-autoconfigure/src/main/java/org/apache/dubbo/spring/boot/autoconfigure/DubboRelaxedBinding2AutoConfiguration.java
@@ -55,6 +55,7 @@
     @Bean(name = BASE_PACKAGES_PROPERTY_RESOLVER_BEAN_NAME)
     public PropertyResolver dubboScanBasePackagesPropertyResolver(ConfigurableEnvironment environment) {
         ConfigurableEnvironment propertyResolver = new AbstractEnvironment() {
+            @Override
             protected void customizePropertySources(MutablePropertySources propertySources) {
                 Map<String, Object> dubboScanProperties = PropertySourcesUtils.getSubProperties(environment, DUBBO_SCAN_PREFIX);
                 propertySources.addLast(new MapPropertySource("dubboScanProperties", dubboScanProperties));
diff --git a/dubbo-spring-boot-compatible/autoconfigure/src/main/java/org/apache/dubbo/spring/boot/env/DubboDefaultPropertiesEnvironmentPostProcessor.java b/dubbo-spring-boot-compatible/autoconfigure/src/main/java/org/apache/dubbo/spring/boot/env/DubboDefaultPropertiesEnvironmentPostProcessor.java
index a8546ec..b3f87f9 100644
--- a/dubbo-spring-boot-compatible/autoconfigure/src/main/java/org/apache/dubbo/spring/boot/env/DubboDefaultPropertiesEnvironmentPostProcessor.java
+++ b/dubbo-spring-boot-compatible/autoconfigure/src/main/java/org/apache/dubbo/spring/boot/env/DubboDefaultPropertiesEnvironmentPostProcessor.java
@@ -70,7 +70,7 @@
     }
 
     private Map<String, Object> createDefaultProperties(ConfigurableEnvironment environment) {
-        Map<String, Object> defaultProperties = new HashMap<String, Object>();
+        Map<String, Object> defaultProperties = new HashMap<>();
         setDubboApplicationNameProperty(environment, defaultProperties);
         setDubboConfigMultipleProperty(defaultProperties);
         setDubboApplicationQosEnableProperty(defaultProperties);