ipaccess_recvmsg: Assert the new bfd from new line differs from the old one
ipaccess_recvmsg: Assert the new bfd from new line differs from the old one

Related: OS#4624
Change-Id: I45818e04af0da7b1109d909642a1ea378a85a636

osmocom/libosmo-abis,osmocom/libosmo-abis,osmocom/libosmo-abis