uipcps: enroll: add missing check for nullptr keepalive timer
uipcps: enroll: add missing check for nullptr keepalive timer

vmaffione/rlite,vmaffione/rlite,vmaffione/rlite,autrimpo/rlite,autrimpo/rlite,autrimpo/rlite,autrimpo/rlite,vmaffione/rlite