[Bug 50896] cloned member of PrivateFontCollection is supposed to survive deletion of the collection

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50896

--- Comment #9 from Esme Povirk  ---
> AFAICT, when GdipPrivateAddFontFile is used, it doesn't add the font to standard gdi32 lookup list, so if an app wanted to use a bundled font via gdiplus, it might very well find itself unable to - generic fallback might kick in in most cases, but sometimes it might be simply lacking the glyphs found in the bundled font.

We use AddFontMemResourceEx to add the font in the calling process. My
understanding is that this makes it usable through gdi32.

We don't have any code to handle fallbacks in gdiplus, so unless ExtTextOut and
GetGlyphOutline both handle it for us, we'd have to do more work for that.