Assigning to dead xBreakIterator instead of m_xBreakIterator had been introduced
with 9f2fde7a "#i103496#: split svtools; improve
ConfitItems," and just fixing it does not cause any tests to start breaking for
me.

Change-Id: I9a26e8d3924bf15ae948c9c26b70f42f8f0d2f64