Merge pull request #808 from nildar/master

fix scope of the 'err' variable

services/publisher/publisher.go

@@ -292,20 +292,20 @@ func (pub *Publisher) publishNextBatch(batch *protocol.AlertBatch) (published bo
 		return false, err
 	}
 
-	if err != nil {
-		logger.WithError(err).Error("failed to sign cid")
-		return false, err
-	}
-
 	scannerAddr := pub.cfg.Key.Address.Hex()
 
 	var resp *domain.AlertBatchResponse
 	for i := 0; i < defaultBatchSendRetryTimes; i++ {
-		scannerJwt, err := security.CreateScannerJWT(
+		var scannerJwt string
+		scannerJwt, err = security.CreateScannerJWT(
 			pub.cfg.Key, map[string]interface{}{
 				"batch": cid,
 			},
 		)
+		if err != nil {
+			logger.WithError(err).Error("failed to sign cid")
+			return false, err
+		}
 		resp, err = pub.alertClient.PostBatch(&domain.AlertBatchRequest{
 			Scanner:            scannerAddr,
 			ChainID:            int64(batch.ChainId),