[Bug 39334] comctl32 status bar test crashes on Linux if Bubbler One font is installed

https://bugs.winehq.org/show_bug.cgi?id=39334

--- Comment #3 from Dmitry Timoshkov  ---
(In reply to Nikolay Sivov from comment #1)
> The issue seems to be about large usWinDescent value, section of OS/2 table:
>
> 'OS/2' version:           2
> ...
>   fsSelection:              0x0040
> ...
>   sTypoAscender:            900
>   sTypoDescender:           -263
> ...
>   usWinAscent:              900
>   usWinDescent:             65273

The source of the problem is that in the freetype/tttables.h TT_OS2 structure
has
FT_SHORT sTypoDescender;
FT_USHORT usWinDescent;

So, probably the most easiest fix would be to treat usWinDescent as signed
value. After all:
-263 == 0xfef9
65273 == 0xfef9