[Pkg-kde-extras] Bug#720721: skanlite scan interrupted makes scanner inaccessible

[Ross Boylan]

Here's a simpler recipe.

1. Check "disable automatic selections".
2. Preview document.
3. Select the active document area (not sure if this is necessary).
4. click scan.
5. While the progress bar is intermediate and scanner is physically
scanning, hit the red button next to the progress bar but above the
cancel button.

This worked 1/1 times I tried.

The scanner is inaccessible from the existing skanlite run, from new
skanlite runs, and from new xsane runs.

Other settings, active for this and previous experiments:
preview resolution 150 dpi.
scan source flatbed
scan mode lineart
scan resolution 400 dpi
brightness 0 (default)

scanner specific options all at default, I think.