This change fix test_threading on Cygwin.
iOS) _PYTHREAD_NAME_MAXLEN=63;;
FreeBSD*) _PYTHREAD_NAME_MAXLEN=19;; # gh-131268
OpenBSD*) _PYTHREAD_NAME_MAXLEN=23;; # gh-131268
+ CYGWIN*) _PYTHREAD_NAME_MAXLEN=16;;
*) _PYTHREAD_NAME_MAXLEN=;;
esac
if test -n "$_PYTHREAD_NAME_MAXLEN"; then
iOS) _PYTHREAD_NAME_MAXLEN=63;;
FreeBSD*) _PYTHREAD_NAME_MAXLEN=19;; # gh-131268
OpenBSD*) _PYTHREAD_NAME_MAXLEN=23;; # gh-131268
+ CYGWIN*) _PYTHREAD_NAME_MAXLEN=16;;
*) _PYTHREAD_NAME_MAXLEN=;;
esac
if test -n "$_PYTHREAD_NAME_MAXLEN"; then