bitcoind: fixed issue with cache mempool updates
bitcoind: fixed issue with cache mempool updates

zcoinrocks/bitcore-node,snogcel/bitcore-node-dash,kleetus/bitcore-node,zcoinrocks/bitcore-node,snogcel/bitcore-node-dash,braydonf/bitcore-node,kleetus/bitcore-node,braydonf/bitcore-node