add missing fixture to test/unit/mailer_test.rb

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@9634 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/mailer_test.rb

@@ -22,7 +22,8 @@ class MailerTest < ActiveSupport::TestCase
   include ActionDispatch::Assertions::SelectorAssertions
   fixtures :projects, :enabled_modules, :issues, :users, :members,
            :member_roles, :roles, :documents, :attachments, :news,
-           :tokens, :journals, :journal_details, :changesets, :trackers,
+           :tokens, :journals, :journal_details, :changesets,
+           :trackers, :projects_trackers,
            :issue_statuses, :enumerations, :messages, :boards, :repositories,
            :wikis, :wiki_pages, :wiki_contents, :wiki_content_versions,
            :versions,