fix logging proposal when we might not have it

consensus/state.go

@@ -1215,7 +1215,7 @@ func (cs *ConsensusState) addProposalBlockPart(height int, part *types.Part) (ad
 		var n int
 		var err error
 		cs.ProposalBlock = wire.ReadBinary(&types.Block{}, cs.ProposalBlockParts.GetReader(), types.MaxBlockSize, &n, &err).(*types.Block)
-		log.Info("Received complete proposal", "hash", cs.ProposalBlock.Hash(), "round", cs.Proposal.Round)
+		log.Info("Received complete proposal", "height", cs.ProposalBlock.Height, "hash", cs.ProposalBlock.Hash())
 		if cs.Step == RoundStepPropose && cs.isProposalComplete() {
 			// Move onto the next step
 			cs.enterPrevote(height, cs.Round)