[3.13] gh-129668: Fix thread-safety of MemoryError freelist in free threaded build (gh-129704) #129742
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…readed build (pythongh-129704) The MemoryError freelist was not thread-safe in the free threaded build. Use a mutex to protect accesses to the freelist. Unlike other freelists, the MemoryError freelist is not performance sensitive. (cherry picked from commit 51b4edb)
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The MemoryError freelist was not thread-safe in the free threaded build. Use a mutex to protect accesses to the freelist. Unlike other freelists, the MemoryError freelist is not performance sensitive.
(cherry picked from commit 51b4edb)