Improve code design

app/models/ci/build.rb

@@ -457,6 +457,7 @@ module Ci
 
     def build_attributes_from_config
       return {} unless pipeline.config_processor
+      
       pipeline.config_processor.build_attributes(name)
     end
   end

lib/ci/gitlab_ci_yaml_processor.rb

@@ -44,7 +44,7 @@ module Ci
     end
 
     def builds_for_ref(ref, tag = false, trigger_request = nil)
-      jobs_for_ref(ref, tag, trigger_request).map do |name, job|
+      jobs_for_ref(ref, tag, trigger_request).map do |name, _|
         build_attributes(name)
       end
     end