(svn r3724) - [5.5/6] heh, the patch part got left out of the previous commit, sorry
/* $Id$ */
static inline void MakeVoid(TileIndex t)
{
SetTileType(t, MP_VOID);
SetTileHeight(t, 0);
_m[t].m1 = 0;
_m[t].m2 = 0;
_m[t].m3 = 0;
_m[t].m4 = 0;
_m[t].m5 = 0;
_m[t].extra = 0;
}