App segfaults on macOS

[virtualritz]

Trying to slice on macOS makes hob3l exit with sig 11:

Example file is here

> out/bin/hob3l.x myfile.scad -o myfile.stl
Info: Z: min=0.1, step=0.2, layer_cnt=152, max=30.3, grid=2^13
Segmentation fault: 11

See also #10.

[moehriegitt]

The file work fine on my Linux machine. Maybe it is a memory overflow issue, or maybe stack overflow?