From 69ef1da58cdfd67cd9e3b4cee3e630ee7772295b Mon Sep 17 00:00:00 2001
From: Ethan Buchman <ethan@coinculture.info>
Date: Tue, 6 Dec 2016 20:53:02 -0500
Subject: [PATCH] types: copy vote set bit array

---
 types/vote_set.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/types/vote_set.go b/types/vote_set.go
index e7598532e..10b1aa094 100644
--- a/types/vote_set.go
+++ b/types/vote_set.go
@@ -325,7 +325,7 @@ func (voteSet *VoteSet) BitArrayByBlockID(blockID BlockID) *BitArray {
 	defer voteSet.mtx.Unlock()
 	votesByBlock, ok := voteSet.votesByBlock[blockID.Key()]
 	if ok {
-		return votesByBlock.bitArray
+		return votesByBlock.bitArray.Copy()
 	}
 	return nil
 }