更新下载回复为空值返回

src/main/java/com/uas/ps/inquiry/service/impl/PublicInquiryServiceImpl.java

@@ -422,7 +422,7 @@ public class PublicInquiryServiceImpl implements PublicInquiryService {
             }
             return convertPublicInquiryReply(items);
         }
-        return null;
+        return new ArrayList<>();
     }
 
     /**