Edge of town rendering bug

[NQNStudios]

This is happening at the northeast corner of Blinrock in VoDT.

The first weird thing was when I loaded a save file that was standing near the town bounds. There was a row of white at the top of the terrain window (presumably out-of-bounds tiles, which should have been black). Then I got into combat and the top of the window started to repeat tiles in those out-of-bounds spaces? Very strange.

[NQNStudios]

Here are the white tiles in the first frame after loading.

[NQNStudios]

And the save file.

VoDT.exg.zip

[NQNStudios]

This looks to be introduced when I fixed #240