[Issue 21784] joining a detached thread results in segfault.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21784

--- Comment #3 from Dlang Bot <dlang-bot at dlang.rocks> ---
dlang/druntime pull request #3434 "merge stable" was merged into master:

- c5eb299128d7614e18ee2e2366005843dbeb0c6b by Ömer Faruk Irmak:
  Fix Issue 21784: Allow detached threads to be joined

  This is useful when a thread terminates before the
  caller is able to join().

https://github.com/dlang/druntime/pull/3434

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