Fixed crash into GCodeTimeEstimator::post_process() while processing custom end g-code
Fixed crash into GCodeTimeEstimator::post_process() while processing custom end g-code

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