divide by zero error fix (#683)

Author: shekhar2807

cmd/vote.go

@@ -178,11 +178,18 @@ func (*UtilsStruct) HandleBlock(client *ethclient.Client, account types.Account,
 		log.Error("Error in getting sRZR balance for staker: ", err)
 		return
 	}
-	sRZRInEth, err := razorUtils.ConvertWeiToEth(sRZRBalance)
-	if err != nil {
-		log.Error(err)
-		return
+
+	var sRZRInEth *big.Float
+	if sRZRBalance.Cmp(big.NewInt(0)) == 0 {
+		sRZRInEth = big.NewFloat(0)
+	} else {
+		sRZRInEth, err = razorUtils.ConvertWeiToEth(sRZRBalance)
+		if err != nil {
+			log.Error(err)
+			return
+		}
 	}
+
 	log.Infof("Block: %d Epoch: %d State: %s Staker ID: %d Stake: %f sRZR Balance: %f Eth Balance: %f", blockNumber, epoch, utils.UtilsInterface.GetStateName(state), stakerId, actualStake, sRZRInEth, actualBalance)
 	if stakedAmount.Cmp(minStakeAmount) < 0 {
 		log.Error("Stake is below minimum required. Cannot vote.")