Because we use the C runtime and use _beginthreadex to create pthreads, pthread_exit MUST use _endthreadex. Otherwise, according to Microsoft: "Failure to do so results in small memory leaks when the thread calls ExitThread." Simply put, this is not the same as ExitThread. Signed-off-by: Seija Kijin <doremylover123@gmail.com> Acked-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>