Use std::u16string_view instead of OUString in one place

...due to which an upcoming loplugin:stringliteralvar improvement would
otherwise have suggested to turn the MinusChar array into an OUStringLiteral,
but which would have lead to awkward code elsewhere.  (And the code is a bit
more efficient this way now anyway, of course.  The remaining

OUString numberChar, multiplierChar, decimalChar, separatorChar;

might benefit from a similar change, but they didn't interfere with the
loplugin:stringliteralvar improvement, so are left alone at least for now.)

Change-Id: I41e3ef987450cbd29d3663a9aeefda336d798170
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/110019
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

0 files changed, 0 insertions, 0 deletions