Hi.

It seems rkhunter creates a directory for temporary files in:
  /var/lib/rkhunter/


I think it would be better if this goes to some proper location
for temp files, especially one that is cleaned up at least on
reboots.
(Of course the tempdir would need to be created in a safe manner
especally as security relevant files go into it, see also #868730)


The reason is that it seems every now and then rkhunter fails
to run and leaves over files like:
  /var/lib/rkhunter/tmp/rkhunter.dat.nVR3TMeLN6
  /var/lib/rkhunter/tmp/rkhunter.dat.rsWMQN1zbO
which stay there for eternity.


Thanks,
Chris.