gdi32/path.c -- Allow PATH_ExtTextOut() handle non printablecharacters

[Dmitry Timoshkov]

"Massimo Del Fedele" <max at veneto.com> wrote:

> PATH_ExtTextOut() uses GetGlyphOutlineW() which can return a NULL buffer 
> size not just on errors but also on non-printable glyphs.
> Instead of aborting the function should check for such cases, get the 
> metrics and continue.

This patch doesn't match the normal logic of ExtTextOut implemented
in dlls/winex11.drv/xrender.c, also this requires a test case for
both code paths.

-- 
Dmitry.