It needs an implementation for `free_texture` in 4ed_metal_render.mm (like `get_texture_of_dim`, and `fill_texture`).
We also need to make sure that the texture (`handle` parameter in get_texture_of_dim and fill_texture) is not zero as the original fix expect 0 to signify "invalid texture". More specifically in `4ed_font_provider_freetyp.cpp` there is `if (texture) { fill the texture }`
and in `4ed_font_set.cpp` there is `if ( slot->face->texture != 0 ) { graphics_free_texture(...);}`
Simon Anciaux
Peter Slattery
Jack Punter