Various problems were discovered with the DJVULibre firefox
browser-plugin:

* Browser plugin from dejavulibre is obsolete and was causing browser
crashes when viewing DJVU content. This browser plugin is now disabled,
mozilla-plugin-dejavu should now be used.
* Djvulibre crashed when converting DJVU file to TIFF. This update
solves it.

This advisory provides djvulibre 3.5.22 that resolves these problems.