[Bug 41107] Total Commander 8.52a Final has VERY slow folder icons rendering

https://bugs.winehq.org/show_bug.cgi?id=41107

--- Comment #21 from Gabriel Ivăncescu  ---
Created attachment 62786
  --> https://bugs.winehq.org/attachment.cgi?id=62786
server: Do not signal violently terminated threads until they are really gone

Here's a fix as suggested by Sebastian: only wait if the thread was terminated
violently, since that's when the risk of race condition exists (the thread is
executing arbitrary code).

I sent it to wine-devel but I guess it's not going to get accepted so easily.
At the very least, it should be updated in wine-staging, so this bug can be
squashed.