Hopefully fixing crash at UB Bamberg
Hopefully fixing crash at UB Bamberg

fixing #137

ruediger-w/opacclient,raphaelm/opacclient,hurzl/opacclient,opacapp/opacclient,geomcmaster/opacclient,johan12345/opacclient,ruediger-w/opacclient,simon04/opacclient,opacapp/opacclient,ruediger-w/opacclient,opacapp/opacclient,raphaelm/opacclient,thesebas/opacclient,johan12345/opacclient,johan12345/opacclient,simon04/opacclient,geomcmaster/opacclient,raphaelm/opacclient,opacapp/opacclient,hurzl/opacclient,simon04/opacclient,ruediger-w/opacclient,hurzl/opacclient,thesebas/opacclient,thesebas/opacclient,geomcmaster/opacclient,opacapp/opacclient,ruediger-w/opacclient,johan12345/opacclient,johan12345/opacclient