net_node: fix connection leak when ping fails with bad response
net_node: fix connection leak when ping fails with bad response

If there is no comms error, but the response is not as expected,
close would not be called.

ranok/bitmonero,ranok/bitmonero,eiabea/bitmonero,eiabea/bitmonero,ranok/bitmonero,eiabea/bitmonero,eiabea/bitmonero,ranok/bitmonero,ranok/bitmonero,eiabea/bitmonero,eiabea/bitmonero,ranok/bitmonero