Fix UpdateBlockInfo for kLost
Fix UpdateBlockInfo for kLost

yvxiang/coverage_for_bfs,lylei/dfs,lylei/dfs,yvxiang/coverage_for_bfs,bluebore/dfs,baidu/bfs,yvxiang/dfs,bluebore/bfs,lylei/dfs,myawan/bfs-1,yvxiang/dfs,linyvxiang/dfs,bluebore/dfs,bluebore/bfs,yvxiang/dfs,linyvxiang/dfs,baidu/bfs,yvxiang/dfs,lylei/dfs,myawan/bfs-1,myawan/bfs-1,yvxiang/coverage_for_bfs,linyvxiang/dfs,baidu/bfs,bluebore/dfs,bluebore/bfs,baidu/bfs,myawan/bfs-1,yvxiang/coverage_for_bfs