This commit follows 7d9945e88463fbfb43fd9a9346ea4c9695d69153.

lte-softmodem UE in S1 and lte-softmodem UE in noS1 modes behave
differently here.

This commit fixes the issue for thoses cases.

Other cases (eNB S1, eNB noS1, oaisim S1/noS1) have to be checked.