Fix comments from review

consensus/state.go

@@ -476,8 +476,6 @@ func (cs *ConsensusState) reconstructLastCommit(state *sm.State) {
 		if precommit == nil {
 			continue
 		}
-		// XXX reconstruct Vote from precommit after changing precommit to simpler
-		// structure.
 		added, err := lastPrecommits.AddVote(precommit)
 		if !added || err != nil {
 			PanicCrisis(Fmt("Failed to reconstruct LastCommit: %v", err))

types/vote_set.go

@@ -140,7 +140,7 @@ func (voteSet *VoteSet) addVote(vote *Vote) (added bool, err error) {
 		panic("Validator index or address was not set in vote.")
 	}
 
-	// Make sure the step matches. (or that vote is commit && round < voteSet.round)
+	// Make sure the step matches.
 	if (vote.Height != voteSet.height) ||
 		(vote.Round != voteSet.round) ||
 		(vote.Type != voteSet.type_) {
@@ -330,7 +330,7 @@ func (voteSet *VoteSet) BitArrayByBlockID(blockID BlockID) *BitArray {
 	return nil
 }
 
-// NOTE: if validator has conflicting votes, picks random.
+// NOTE: if validator has conflicting votes, returns "canonical" vote
 func (voteSet *VoteSet) GetByIndex(valIndex int) *Vote {
 	voteSet.mtx.Lock()
 	defer voteSet.mtx.Unlock()