Use new libosmo-sigtran API osmo_ss7_instances_llist_entry()Depends: libosmo-sigtran.git Change-Id I148438aecd64bdd66848d4b3404d379a380c5e9cChange-Id: Iacbe2944957ab2e2a627f2dabdaa66d9fc8eabe3(cherry picked from commit ea8071e6d2551ccb6a9d1e3597d6886680378b86)