lu_fsm_priv.rej_cause is never used
lu_fsm_priv.rej_cause is set as a result to calls to
vlr_loc_update_cancel(), but it doesn't appear to be used anywhere ?!?
This was introduced in
commit 158095960b7f036480b50a9e0508d63579322db7 Author: Neels Hofmeyr <firstname.lastname@example.org> Date: Fri Apr 6 02:57:51 2018 +0200