fix vote result (#186)

diff --git a/database/cache.go b/database/cache.go
index 01366a1..7668d9c 100644 (file)
--- a/database/cache.go
+++ b/database/cache.go
@@ -98,7 +98,7 @@ func (c *blockCache) lookupBlockTxs(hash *bc.Hash) ([]*types.Tx, error) {
 
 func (c *blockCache) lookupVoteResult(seq uint64) (*state.VoteResult, error) {
        if vr, ok := c.getVoteResult(seq); ok {
-               return vr, nil
+               return vr.Fork(), nil
        }
 
        seqStr := strconv.FormatUint(seq, 10)
@@ -118,7 +118,7 @@ func (c *blockCache) lookupVoteResult(seq uint64) (*state.VoteResult, error) {
        if err != nil {
                return nil, err
        }
-       return voteResult.(*state.VoteResult), nil
+       return voteResult.(*state.VoteResult).Fork(), nil
 }
 
 func (c *blockCache) getBlockHeader(hash *bc.Hash) (*types.BlockHeader, bool) {