using recent fixes of Hunspell code base

Change-Id: I180a2ecba924180419c5eb1a0e78b5c84e7242c4
Reviewed-on: https://gerrit.libreoffice.org/35665Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: László Németh <nemeth@numbertext.org>
Tested-by: László Németh <nemeth@numbertext.org>