Fix bug in simutools, introduced a few commits back.
Fix bug in simutools, introduced a few commits back.

git-svn-id: ad2a872dfb5accdcee22c80d0a136769e8f61d01@852 e96eaf88-093e-0410-925f-862d53288611

simutrans/pak128,simutrans/pak128,simutrans/pak128,simutrans/pak128,simutrans/pak128