gh-96848: Fix -X int_max_str_digits option parsing (GH-96988)

Fix command line parsing: reject "-X int_max_str_digits" option with
no value (invalid) when the PYTHONINTMAXSTRDIGITS environment
variable is set to a valid limit.
(cherry picked from commit 41351662bcd21672d8ccfa62fe44d72027e6bcf8)

Co-authored-by: Victor Stinner <vstinner@python.org>

Miss Islington (bot) committed 3y ago

00c352404a2f57f16a0b0d02eef5bdf1a1bd169f

Parent: 8bdaf9b

Committed by GitHub <noreply@github.com> on 9/26/2022, 3:46:04 PM