stop 'btminer process is down err' from blocking get data process#416

bugy855 wants to merge 1 commit intoUpstreamData:masterUpstreamData/pyasic:masterfrom

bugy855:fix/stop-bt-miner-process-is-down-err-from-blocking-get-data-methodbugy855/pyasic:fix/stop-bt-miner-process-is-down-err-from-blocking-get-data-methodCopy head branch name to clipboard