winex11.drv: Do not crash if UploadGlyph failed

[Alexandre Julliard]

Dmitry Timoshkov <dmitry at codeweavers.com> writes:

> this patch fixes the Firefox crashes reported in the bugs 4762 and 12307.
>
> Changelog:
>     winex11.drv: Do not crash if UploadGlyph failed.

I don't think that's correct, it should still display the valid glyphs
and use a replacement char for the invalid ones.

-- 
Alexandre Julliard
julliard at winehq.org