Cannot open L01 storing sparce file like $UsnJnrl:$J

[sleepynox]

$UsnJnrl:$J is stored with many extents including sparse areas.
Normally the first extent starts with a sparse area.
The current libewf library cannot open those L01.

The following is the sample.
https://drive.google.com/file/d/1Ipb7BhJSNxYV_LJ8XppcL74lTV71fJUK/view?usp=sharing

Thanks