gh-91595: fix the comparison of character and integer by using ord() (GH-91596)

* fix the comparison of character and integer by using ord()

* 📜🤖 Added by blurb_it.

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
(cherry picked from commit 9300b6d72948b94c0924a75ea14c6298156522d0)

Co-authored-by: Yu Liu <yuki.liu@utexas.edu>