code layout clean up unit message test

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11198 e93f8b46-1217-0410-a6f0-8f06a7374b81
not use unnecessary instance variable at unit message test

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@11199 e93f8b46-1217-0410-a6f0-8f06a7374b81