libmsc/ran_msg_a.c: refactor ran_a_decode_lcls_notification()

We basically need to make sure that one of two possible IEs
is not NULL, while another is NULL (eXclusive OR). This can
be done using at least two conditional branches.

Change-Id: Ie0f9b5c1bbbfb744e0615da07d76037d91b0abc8
Fixes: CID#198444 Logically dead code
1 file changed