errcode.hxx: avoid some Wconversion warnings
errcode.hxx: avoid some Wconversion warnings

Change-Id: I48bb49c7eb472fa493fca71736acc358151e87ac
Reviewed-on: https://gerrit.libreoffice.org/17308
Reviewed-by: Eike Rathke <ca97d066ec547ed7b5f176c01ed86da55dede03e@redhat.com>
Tested-by: Eike Rathke <ca97d066ec547ed7b5f176c01ed86da55dede03e@redhat.com>

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