[test] Bonding: fixed closing the listener socket. (#2538)
[test] Bonding: fixed closing the listener socket. (#2538)

The listener socket was left open after exiting the function.
Haivision/srt,Haivision/srt,ethouris/srt,ethouris/srt,Haivision/srt,ethouris/srt,Haivision/srt,ethouris/srt