handover_test: explicitly wrap abis_rsl_sendmsg()

Until now, handover_test simply defines an abis_rsl_sendmsg() function to
override the one from libosmo-babis. To me this amounts to implicit linker
magic (aka luck).

The common pattern we're using for this scenario is to explicitly wrap an
existing function by instructing the linker. Also do this for
abis_rsl_sendmsg() in handover_test.c to clarify.

Change-Id: I05ce33a4e42bc82b9ce5060e2f811033f5a1f8d8
2 files changed