Bug#235797: cdrom-detect: Unable to eject CD at the end of the install

[Petter Reinholdtsen <pere@hungry.com>]

Package: cdrom-detect
Version: 0.48
Tags:    d-i

When installing using d-i, the CD is supposed to be ejected at the end
of the first stage install.  This used to work earlier, but do not
work any more.

There is one message in the syslog related to this:

  prebaseconfig: info: Running /usr/lib/prebaseconfig.d/15cdrom-detect
  prebaseconfig: /target/usr/bin/eject: unable to eject, last error:
    Invalid argument

I've added some debug logging to the script in version 0.49 to get a
syslog entry with the name of the device used.  I hope this will tell
me why this eject call fails.