gdiplus: skip some tests if Arial is not installed

[Dmitry Timoshkov]

Austin English <austinenglish at gmail.com> wrote:

> font.c:784<https://source.winehq.org/git/wine.git/?a=blob;f=dlls/gdiplus/tests/font.c;hb=3ea505bdea39d9c412120d6120c39067170cabc7#l784>:
> Test failed: wrong face name Liberation Sans
> font.c:794<https://source.winehq.org/git/wine.git/?a=blob;f=dlls/gdiplus/tests/font.c;hb=3ea505bdea39d9c412120d6120c39067170cabc7#l794>:
> Test failed: wrong face name Liberation Sans
> 
> 784 ok(!lstrcmpA(lf.lfFaceName, "Arial"), "wrong face name %s\n",
> lf.lfFaceName);
> ...
> 794 ok(!lstrcmpA(lf.lfFaceName, "Arial"), "wrong face name %s\n",
> lf.lfFaceName);

That's a gdi32 breakage (it shouldn't return "Liberation Sans"), nothing
to do with gdiplus tests.

-- 
Dmitry.