IW4 physcollmap dumper asserts on `PHYS_GEOM_COLLMAP`

[michaeloliverx]

Unlinker.exe crashes/asserts when dumping an IW4 fastfile containing a physcollmap geom of type PHYS_GEOM_COLLMAP.

The failing asset is:

physcollmap,com_junktire_colmap

It comes from this mod: https://www.youtube.com/watch?v=MeDICmOAvBg
cksm_release_v1.01.zip

I guess this assumption is wrong:

OpenAssetTools/src/ObjWriting/Game/IW4/PhysCollmap/PhysCollmapDumperIW4.cpp

Lines 61 to 69 in 3382d17

	case PHYS_GEOM_BRUSHMODEL:
	case PHYS_GEOM_BRUSH:
	case PHYS_GEOM_COLLMAP:
	case PHYS_GEOM_CAPSULE:
	case PHYS_GEOM_GLASS:
	default:
	// These do not seem to appear inside any collmap assets
	assert(false);
	break;