Description of problem:
While testing a patch of BZ#2233497 using the upstream unit test 1397 I've discovered that the current patch may be incomplete – the unit1397 test fails without the patch attached.

Version-Release number of selected component (if applicable):
7.76.1-23.el9_2.2 (rhel-9.2)
7.76.1-26 (rhel-9)
7.76.1-23.el9_2.2 (rhel-8.8)

How reproducible:
Always

Steps to Reproduce:
1. Build curl with --enable-debug (triggers unit testing)
2. Wait for unit test 1397 to run.
3. Inspect build log.

Actual results:

test 1397...[Curl_cert_hostcheck unit tests]
../libtool --mode=execute /usr/bin/valgrind --tool=memcheck --quiet --leak-check=yes --suppressions=../../tests/valgrind.supp --num-callers=16 --log-file=log/valgrind1397 ./unit/unit1397 - >log/stdout1397 2>log/stderr1397
CMD (1536): ../libtool --mode=execute /usr/bin/valgrind --tool=memcheck --quiet --leak-check=yes --suppressions=../../tests/valgrind.supp --num-callers=16 --log-file=log/valgrind1397 ./unit/unit1397 - >log/stdout1397 2>log/stderr1397
unit1397 returned 6, when expecting 0
exit FAILED
== Contents of files in the log/ dir after test 1397
=== Start of file commands.log
../libtool --mode=execute /usr/bin/valgrind --tool=memcheck --quiet --leak-check=yes --suppressions=../../tests/valgrind.supp --num-callers=16 --log-file=log/valgrind1397 ./unit/unit1397 - >log/stdout1397 2>log/stderr1397
=== End of file commands.log
=== Start of file ftpserver.cmd
Testnum 1397
=== End of file ftpserver.cmd
=== Start of file stderr1397
URL: -
HOST: h.e.llo.
PTRN: *.e.llo
did NOT MATCH
HOST: *.e.llo.
PTRN: *.e.llo
did NOT MATCH
HOST: ************.e.llo.
PTRN: *.e.llo
did NOT MATCH
HOST: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE.e.llo.
PTRN: *.e.llo
did NOT MATCH
HOST: ��.e.llo.
PTRN: *.e.llo
did NOT MATCH
HOST: h.e.llo
PTRN: *.e.llo.
did NOT MATCH
=== End of file stderr1397

Expected results:
Test passes.

Additional info: