Fixed issue that invalid prerequisites are not reflected to the resul…

…ts (#169)

Signed-off-by: TaikiYamada4 <[email protected]>

map/autoware_lanelet2_map_validator/src/common/validation.cpp

@@ -305,15 +305,14 @@ void process_requirements(
 
     // Check prerequisites are OK
     const auto prerequisite_issues = check_prerequisite_completion(validators, validator_name);
-    appendIssues(total_issues, prerequisite_issues);
 
     // NOTE: if prerequisite_issues is not empty, skip the content validation process
     const auto issues =
       prerequisite_issues.empty()
         ? apply_validation(
             lanelet_map, replace_validator(
                            validator_config.command_line_config.validationConfig, validator_name))
-        : std::vector<lanelet::validation::DetectedIssues>();
+        : std::move(prerequisite_issues);
 
     // Add validation results to the json data
     json & validator_json = find_validator_block(json_data, validator_name);