Correctly bisect format 12 and 8 cmap tables

* src/sfnt.c (sfnt_bsearch_above): Cease returning the last
element if it is ordered below the key itself.
(sfnt_lookup_glyph_8, sfnt_lookup_glyph_12): Verify whether the
group returned is NULL.
2 jobs for master in 2 minutes and 52 seconds (queued for 23 seconds)
Status Job ID Name Coverage
  Build Images
failed #75642
build-image-inotify

00:02:52

 
  Normal
skipped #75643
test-src-inotify
 
Name Stage Failure
failed
build-image-inotify Build Images
$ docker login -u ${CI_REGISTRY_USER} -p ${CI_REGISTRY_PASSWORD} ${CI_REGISTRY}
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
Error response from daemon: Get "https://emba.gnu.org:5050/v2/": Get "https://emba.gnu.org//jwt/auth?account=gitlab-ci-token&client_id=docker&offline_token=true&service=container_registry": context deadline exceeded (Client.Timeout exceeded while awaiting headers) (Client.Timeout exceeded while awaiting headers)
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
$ find ${test_name} ! \( -name "*.log" -o -name ${EMACS_TEST_JUNIT_REPORT} \) -type f -delete
find: build-image-inotify-06fc5c24: No such file or directory
ERROR: Job failed: exit code 1