# memset16 fix

Although I know I tested the memset16() presented earlier, one instruction miraculously disappeared when posting it here. There should have been an mov r12, r1' in the initializing of the registers for the stmia. I have no idea where it disappeared to, but with this fix the routine should run properly.

I've been having a number of this sort of errors lately, actually. I've also recently found out that the shared-tileset in the current distribution is broken because of a single character that handles it in grit_prep_map. This:

// in grit_prep.cpp, grit_prep_map
if(gr->img_flags & GRIT_IMG_SHARED)
rdxDib= grit_tile_reduce(&mapRec, tileDib, flags, NULL);
else
rdxDib= grit_tile_reduce(&mapRec, tileDib, flags, gr->shared->dib);

should have been this:

// in grit_prep.cpp, grit_prep_map
if(~gr->img_flags & GRIT_IMG_SHARED)
rdxDib= grit_tile_reduce(&mapRec, tileDib, flags, NULL);
else
rdxDib= grit_tile_reduce(&mapRec, tileDib, flags, gr->shared->dib);

The missing ~` means that the the code did exactly the wrong thing. And again, during testing I had it right (cue Twilight-zone theme).