[MiNT] GEMLIB: NIL is 0

[Gerhard Stoll <gerhard_stoll@gmx.de>]

Hello,

I sah in the mt_gem.h that NIL is defined with 0. But that is not correct it must be -1. For example the define is used in the object structure if ob_head  have no kind object.

The problem is that it looks like that this is since many year and I am surprised that I am the first one who find this.

So what is to do? Change it in the header and hope that nobody use NIL and wants 0 or let it be. And hope nobody want -1.

Gerhard