...now that sal_Unicode no longer clashes with sal_uInt16 on any platform (in
LIBO_INTERNAL_ONLY code), after e16fa715c43dcdf836ce8c400b6d54eae87b627d "Handle
wchar_t as native C++11 type on windows"
Change-Id: Id423dd6235bf14823fa5611b804c0974edbe64b3