Unfix DoS warp rooms on edge having minor visual bug
Unfix DoS warp rooms on edge having minor visual bug

By fixing this for the ones on the edge, we cause the bug for all warp
rooms that have an X or Y of 0x80+ (since by treating the byte as signed
0x80+ are negative numbers). So just deal with the ones on the edge
looking wrong.

LagoLunatic/dsvrandom