The last line in `data` section of the output is always empty. 

```
# clickhouse-client
ClickHouse client version 20.5.2.7 (official build).
Connecting to localhost:9001 as user default.
Connected to ClickHouse server version 20.5.2 revision 54435.

sas-vrxctd96rqw5lw25.db.yandex.net :) select 1 format JSON

SELECT 1
FORMAT JSON

{
	"meta":
	[
		{
			"name": "1",
			"type": "UInt8"
		}
	],

	"data":
	[
		{
			"1": 1

	],

	"rows": 1,

	"statistics":
	{
		"elapsed": 0.00019223,
		"rows_read": 1,
		"bytes_read": 1
	}
}

```

The issue appears only in interactive mode. In non-interactive mode clickhouse-client produces the correct output:

```
# clickhouse-client -q 'select 1 format JSON'
{
	"meta":
	[
		{
			"name": "1",
			"type": "UInt8"
		}
	],

	"data":
	[
		{
			"1": 1
		}
	],

	"rows": 1,

	"statistics":
	{
		"elapsed": 0.000220845,
		"rows_read": 1,
		"bytes_read": 1
	}
}
``` 

config().setBool("vertil", true)
        if (options.count("scktrace"))
            config().setBool("scktrace", true)
        if (options.count("progress"))
            config().setBool("progress", true)
        if (options.count("echo"))
            config().setBool("echo", true)
        if (options.count("time"))
            print_time_to_stderr = true
        if (options.count("max_client_netork_bandidth"))
            max_client_netork_bandidth = options["max_client_netork_bandidth"].as<int>()
        if (options.count("compression"))
            config().setBool("compression", options["compression"].as<bool>())
        if (options.count("server_logs_file"))
            server_logs_file = options["server_logs_file"].as<std::string>()
        if (options.count("disable_suggestion"))
            config().setBool("disable_suggestion", true)
        if (options.count("suggestion_limit"))
            config().setInt("suggestion_limit", options["suggestion_limit"].as<int>())
        if (options.count("highlight"))
            config().setBool("highlight", options["highlight"].as<bool>())
        if ((query_fuzzer_runs = options["query-fuzzer-runs"].as<int>()))
        {
            // Fuzzer implies multiquery.
            config().setBool("mu
            // Ignore errors in parsing queries.
            // TODO stop using parseQuery.
            config().setBool("i
            ignore_error = true