fixbug No records found

Author: 365089264

client.go

@@ -172,6 +172,9 @@ func (c *Client) call(module, action string, param map[string]interface{}, outco
 		err = wrapErr(err, "json unmarshal envelope")
 		return
 	}
+	if envelope.Status == 0 && envelope.Message == "No records found" {
+		return
+	}
 	if envelope.Status != 1 {
 		err = fmt.Errorf("etherscan server: %s", envelope.Message)
 		return