[3.12] gh-104341: Call _PyEval_ReleaseLock() with NULL When Finalizing the Current Thread (gh-105109) #105209
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This avoids the problematic race in drop_gil() by skipping the FORCE_SWITCHING code there for finalizing threads.
(The idea for this approach came out of discussions with @markshannon.)
(cherry picked from commit 3698fda)
Co-authored-by: Eric Snow [email protected]