[upgrade] libreoffice-common unopkg fails to install with a "Cannot determine language!" crash

[Martin Pitt]

The automatic dist-upgrade tester failed on oneiric -> precise with universe enabled. The relevant excerpt:

Processing triggers for libreoffice-common ...

ERROR: Cannot determine language!
Exception details:
(com.sun.star.uno.RuntimeException) { { Message = "Cannot determine language!", Context = (com.sun.star.uno.XInterface) @0 } }

unopkg failed.
terminate called after throwing an instance of 'com::sun::star::uno::RuntimeException'
Aborted (core dumped)
dpkg: error processing libreoffice-common (--unpack):
 subprocess installed post-installation script returned error exit status 134
Errors were encountered while processing:
 libreoffice-common

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.