spelling

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6464 8aca7d54-2c30-db11-9de9-000461428c89
remove double add_money_message call

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6466 8aca7d54-2c30-db11-9de9-000461428c89
remove unused variable

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6467 8aca7d54-2c30-db11-9de9-000461428c89