dpll: memleak and NULL pointer deref fixes
JIRA: https://issues.redhat.com/browse/RHEL-19095
CVE: CVE-2023-6679
Two fixes for the DPLL subsystem. Memleaks in error paths and a NULL pointer dereference on invalid user input. The latter has the CVE associated.
Signed-off-by: Michal Schmidt mschmidt@redhat.com