exit() calls in F3DOptions leaks
[glow@violet ~/work/f3d/f3d/build]$ ./bin/f3d --version
F3D - A fast and minimalist 3D viewer
Version: 1.1.0
Build date: 2021-04-15 01:23:27
System: Linux-5.11.9-arch1-1 x86_64
Compiler: GNU 10.2.0
RayTracing module: ON
Exodus module: ON
CAD module: OFF
VTK version: 9.0.0 (build 20210412)
Author: Kitware SAS
vtkDebugLeaks has detected LEAKS!
Class "vtkF3DObjectFactory" has 1 instance still around.