nr rlc: fix standalone tests
./run_tests.sh was not functional anymore because of the introduction of AssertFatal() in nr_rlc_entity.c
Including the .h and providing exit_function() solves the problem.
This should have no impact on the CI.
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./run_tests.sh was not functional anymore because of the introduction of AssertFatal() in nr_rlc_entity.c
Including the .h and providing exit_function() solves the problem.
This should have no impact on the CI.