v.0.38.3 List wrapping. Moving backwards over 0 byte files.

[marsh]

1. Create 4 empty files named 1.jpg, 2.jpg, 3.jpg, 4.jpg
2. 940 normal jpegs placed after empty ones.
3. View>Misc>[x]Loop file list.
4. Start at first good file in viewer. Move forwards several images with mouse wheel.
5. Move backwards toward 935/940.
6. Viewer will sometimes get stuck upon these empty files (which could represent bad downloads). One may have to go back and forth between 5/940 and 935/940 to see it.