[Linux] Spellbooks have missing icon on the map

[lokrok]

On Linux (not WINE), spellbooks appear to have a missing texture when viewing them on the view glass. This isn't the case for mystery boxes or traps.

My guess was case insensitivity but I've renamed every file under my install to lowercase.

[Loobinex]

It's not a missing texture, the grid pattern indicates a missing icon.

[lokrok]

Texture... icon... in some places they mean the same thing. You get what I meant.

[Loobinex]

Texture... icon... in some places they mean the same thing. You get what I meant.

I do, but in case people want to look into fixing it, it is helpful to know where to look.