Witness message causes end of voting round duplicate transactions.

[officiallymarky]

If there are multiple bids that happen during voting, I have noticed duplicate transaction errors when it attempts to send out witness memo

2|buildawh | Tue Feb 20 2018 00:23:54 GMT-0800 (PST) - Error Count: 0
2|buildawh | Tue Feb 20 2018 00:23:54 GMT-0800 (PST) - Error sending refund to @ripa for: 0.001 SBD, Error: RPCError: 10 assert_exception: Assert Exception
2|buildawh | (skip & skip_transaction_dupe_check) || trx_idx.indices().get<by_trx_id>().find(trx_id) == trx_idx.indices().get<by_trx_id>().end(): Duplicate transaction check failed
2|buildawh | {"trx_ix":"bbc5f73b139c1e854d15d93dc4bea5a6c8457f14"}
2|buildawh | th_a database.cpp:2834 _apply_transaction
2|buildawh | {"trx":{"ref_block_num":41618,"ref_block_prefix":2830137732,"expiration":"2018-02-20T08:33:51","operations":[["transfer",{"from":"buildawhale","to":"ripa","amount":"0.001 SBD","memo":"Thank you for using buildawhale - If you want to support our daily Curation Digest and anti-spam efforts please vote @TheMarkyMark as witness"}]],"extensions":[],"signatures":["1f0ac59f16a909f4708bc81814f9a0a57e7784218094bbd6c62d69c7887ec398d5275c2b45c3a49473980bf8430f2e1c680f4f91b36adf5db17432f4e1965d765c"]}}
2|buildawh | th_a database.cpp:2897 _apply_transaction
2|buildawh | {"trx":{"ref_block_num":41618,"ref_block_prefix":2830137732,"expiration":"2018-02-20T08:33:51","operations":[["transfer",{"from":"buildawhale","to":"ripa","amount":"0.001 SBD","memo":"Thank you for using buildawhale - If you want to support our daily Curation Digest and anti-spam efforts please vote @TheMarkyMark as witness"}]],"extensions":[],"signatures":["1f0ac59f16a909f4708bc81814f9a0a57e7784218094bbd6c62d69c7887ec398d5275c2b45c3a49473980bf8430f2e1c680f4f91b36adf5db17432f4e1965d765c"]}}
2|buildawh | th_a database.cpp:660 push_transaction
2|buildawh | {"call.method":"call","call.params":["network_broadcast_api","broadcast_transaction_synchronous",[{"ref_block_num":41618,"ref_block_prefix":2830137732,"expiration":"2018-02-20T08:33:51","operations":[["transfer",{"from":"buildawhale","to":"ripa","amount":"0.001 SBD","memo":"Thank you for using buildawhale - If you want to support our daily Curation Digest and anti-spam efforts please vote @TheMarkyMark as witness"}]],"extensions":[],"signatures":["1f0ac59f16a909f4708bc81814f9a0a57e7784218094bbd6c62d69c7887ec398d5275c2b45c3a49473980bf8430f2e1c680f4f91b36adf5db17432f4e1965d765c"]}]]}
2|buildawh | th_a websocket_api.cpp:124 on_message