Regression from e3f254ab (RTF import:
fix spurious page breaks at doc end (related: rhbz#1065629),
2014-02-27), the problem was that now we update the parser state to
remember the next section break should set the break type of the current
section to "next page", but this state should be remembered once the RTF
group ends ("}" character), otherwise \page will be represented with a
continuous break, i.e. lost.

Change-Id: I69a8413f45e17e11d6d676c7bfd13ca7560b4d43
Reviewed-on: https://gerrit.libreoffice.org/53498Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>