[Libreoffice] need some acks for 3-3 and fdo#35405 es thesaurus crash

[Caolán McNamara]

See https://bugs.freedesktop.org/show_bug.cgi?id=35405 and fix of
http://cgit.freedesktop.org/libreoffice/libs-extern/commit/?h=libreoffice-3-3&id=896c49083aec918b0710f9c62f2f775a53f28057

I'd like to backport this rather mythes trivial crasher fix to 3-3-2

C.