Fixed Linux-related problem in XYZLoader.
Fixed Linux-related problem in XYZLoader.

git-svn-id: ab538f9709174a506b15ae819e9819105e1f1301@225 5e8c2511-817d-0410-85a1-fd227d6480d1

UniStuttgart-VISUS/megamol,UniStuttgart-VISUS/megamol,UniStuttgart-VISUS/megamol,UniStuttgart-VISUS/megamol,UniStuttgart-VISUS/megamol