[Bug 43273] The Witcher 3 freezes the system in a certain area of the game

https://bugs.winehq.org/show_bug.cgi?id=43273

--- Comment #52 from Shmerl  ---
Created attachment 59387
  --> https://bugs.winehq.org/attachment.cgi?id=59387
Varyings freeze patched, based on Mesa hack

Can anyone try this patch please? I used the idea from Samuel Pitoiset's hack,
which injects one varying, if there are zero detected (
https://bugs.freedesktop.org/attachment.cgi?id=134356 ). So, same hack, but
applied in Wine. At least it should allow using stock Mesa without building the
custom one.