FIX: compile again

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6291 8aca7d54-2c30-db11-9de9-000461428c89
(Ters) avoid stack overflow on sorting very arge packet lists

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6292 8aca7d54-2c30-db11-9de9-000461428c89