From a23ab123d794dace19775aa0aa2e1686b5552184 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=88=98=E6=9E=97=E6=AC=A3?= <llx@ipfsmain.cn>
Date: Tue, 1 Sep 2020 11:44:55 +0800
Subject: [PATCH] fix GetBestMiningCandidate bug

Signed-off-by: Jakub Sztandera <kubuxu@protocol.ai>
---
 miner/miner.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/miner/miner.go b/miner/miner.go
index a256e8b3a48..aebcb7a2544 100644
--- a/miner/miner.go
+++ b/miner/miner.go
@@ -327,6 +327,7 @@ func (m *Miner) GetBestMiningCandidate(ctx context.Context) (*MiningBase, error)
 		}
 		ltsw, err := m.api.ChainTipSetWeight(ctx, m.lastWork.TipSet.Key())
 		if err != nil {
+			m.lastWork = nil
 			return nil, err
 		}