src/lu_fsm.c: dealloc and cancel previous IMSI

FIXME: deallocation works, but the location cancel does not get sent
yet. (LU runs into a timeout and ME tries again, then the LU is
successful)

Related: OS#4476
Change-Id: I3993cbec8c5e96d704a58b396a55362e938c9cd2
3 files changed