(DrSuperGood) JIT2 code cleanup

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@7409 8aca7d54-2c30-db11-9de9-000461428c89
(DrSuperGood) some warning silencing

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@7410 8aca7d54-2c30-db11-9de9-000461428c89