FIX: buffer overrun

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6513 8aca7d54-2c30-db11-9de9-000461428c89
FIX: initialize and reset outside_visible

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6514 8aca7d54-2c30-db11-9de9-000461428c89
squelch unused variable warnings

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6515 8aca7d54-2c30-db11-9de9-000461428c89
squelch unused variable warnings 2nd try

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6516 8aca7d54-2c30-db11-9de9-000461428c89