gh-151179: Fix pidfd leak in asyncio _PidfdChildWatcher#151186
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deadlovelll
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Jun 11, 2026
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_PidfdChildWatcher._do_wait()leftos.close(pidfd)outside the cleanup path. The pidfd leaked whenwaitpid()raising anything other thanChildProcessError. Movingos.close()into afinallyblock closes the descriptor while still letting the exception propagate.For more details see gh-151179