fix handover start: dealloc ho if event not permitted

Before this, a handover request in a conn state that disallows it would leave a
lingering handover state in the conn, also thwarting any future handover
attempts. (It would be deallocated on conn teardown, so no memleak.)

Change-Id: I839a05495ae93c5dbbd1616efa2469e5b1990a61
1 file changed