crashtesting ooo84576-1.odt

crashtesting ooo84576-1.odt

prevent the OOM by detecting cycles in SwList::SwList and throwing an
exception.

(1) However, that means we need to catch the exception in
    XMLTextListBlockContext::XMLTextListBlockContext
and undo some registration, otherwise we will get a use-after-free.

The need to catch it is why I'm using an UNO exception here,
it seemed like a bad idea to throw and then catch and std::foo
exception.

(2) this is still not the end of the story, a further exception
is thrown during SwDoc destruction, for which I don't have a
solution.

Change-Id: I48be3d8acbdc0f9ca948a958f1124b158ba77ac0
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/143820
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>