Use a separate line for separate actions:

Feedback from:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/3363#note_12420487

lib/gitlab/email/handler/base_handler.rb

@@ -31,7 +31,8 @@ module Gitlab
         end
         def process_message
-          add_attachments(ReplyParser.new(mail).execute.strip)
+          message = ReplyParser.new(mail).execute.strip
+          add_attachments(message)
         end
         def add_attachments(reply)