[Bug 43328] dotnet 4.5 applications crash in factory_get_cached_fontface

https://bugs.winehq.org/show_bug.cgi?id=43328

--- Comment #5 from Anton Romanov  ---
Just protecting get/release cached fontface fixes this for me 
EG:
https://github.com/theli-ua/wine/commit/178104b59b0415fd24f48a14f921a30d03fc...

Not sure if this solution is acceptable , if yes I can just send this to
wine-patches I guess

I was testing this with "Magic The Gathering: Online" that is a .net 4.5.2 app
that was constantly crashing for me in get_cached_fontface before the patch