Thanks for checking the fix; closing the bug report.
- bug#32305: mingw vs do_chown in gzip Paul Eggert
- bug#32305: mingw vs do_chown in gzip Bdale Garbee
- bug#32305: mingw vs do_chown in gzip Paul Eggert
- bug#32305: mingw vs do_chown in gzip Bdale Garbee
- bug#32305: mingw vs do_chown in gzip Paul Eggert