ibuffer-do-isearch: don't depend on `cl-values-list' (bug#38430)

* lisp/ibuf-ext.el (ibuffer-generate-filter-groups): Don't call
`cl-values-list'.  Our implementation of that function just
checks that its argument is a list, and then returns it.  In
this specific case, the argument is guaranteed to be a list.
1 job for master in 90 minutes and 1 second (queued for 2 seconds)
Status Job ID Name Coverage
failed #4400


Name Stage Failure
test-all Test The script exceeded the maximum execution time set for the job
make -C test check-expensive
make[1]: Entering directory '/builds/emacs/emacs/test'
rm -f ./*.tmp
make[2]: Entering directory '/builds/emacs/emacs/test'
make[3]: Entering directory '/builds/emacs/emacs/test'
ELC lisp/net/tramp-tests.elc
GEN lisp/net/tramp-tests.log
Pulling docker image gitlab/gitlab-runner-helper:x86_64-d0b76032 ...
ERROR: Job failed: execution took longer than 1h30m0s seconds