Commit 2d74822a renamed
"freebsdNodeGetCPUCount" to "appleFreebsdNodeGetCPUCount", leaving one
call to "freebsdNodeGetCPUCount".  Fix this other case.
Signed-off-by: NGiuseppe Scrivano <gscrivan@redhat.com>
Signed-off-by: NEric Blake <eblake@redhat.com>