Fix of a crash in pressure equlizer filter. https://github.com/prusa3d/Slic3r/issues/339
Fix of a crash in pressure equlizer filter.
https://github.com/prusa3d/Slic3r/issues/339

prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r,prusa3d/Slic3r