Merge branch 'rs/setup-use-xopen-and-xdup' into maint

Code clean-up. * rs/setup-use-xopen-and-xdup: setup: use xopen and xdup in sanitize_stdfds

Junio C Hamano committed Oct 12, 2021 at 13:51 UTC 49c2cbe69aa0cb85a2c749ef853eae907d1249ba

No changes.