Partial fix #1876, check thread in block_txn_start()
Don't allow use of existing batch txn if it's from the wrong thread
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@ -2503,7 +2503,8 @@ void BlockchainLMDB::block_txn_start(bool readonly)
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throw0(DB_ERROR_TXN_START(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
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}
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memset(&m_wcursors, 0, sizeof(m_wcursors));
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}
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} else if (m_writer != boost::this_thread::get_id())
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throw0(DB_ERROR_TXN_START((std::string("Attempted to start new write txn when batch txn already exists in ")+__FUNCTION__).c_str()));
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}
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void BlockchainLMDB::block_txn_stop()
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