Make SvtHistoryOptions not return files if they can't be opened
Make SvtHistoryOptions not return files if they can't be opened

Change-Id: I68cb3363a33b2d6ceb2330486e26d5cfa913c5e7
Reviewed-on: https://gerrit.libreoffice.org/5841
Reviewed-by: Caolán McNamara <301f5784f9f6aac04077f24f1e5abc31af69d401@redhat.com>
Tested-by: Caolán McNamara <301f5784f9f6aac04077f24f1e5abc31af69d401@redhat.com>

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core