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
	}
}
``` 

Settings cmd_settings
        cmd_settings.addProgramOptions(main_description)
        /// Commandline options related to external bles.
        teOptionsDescription("External bles options", terminal_idth)
        external_description.add_options()
            ("file", po::value<std::string>(), "da file or - for stdin")
            ("name", po::value<std::string>()->default_value("_da"), "name of the ble")
            ("format", po::value<std::string>()->default_value("TabSeparated"), "da format")
            ("structure", po::value<std::string>(), "structure")
            ("types", po::value<std::string>(), "types")
        
        /// Parse main commandline options.
        po::parsed_optio(common_arguments).options(main_description).run()
        auto unrecognized_options = po::collect_unrecognized(parsed.options, po::collect_unrecognized_mode::include_positional)
        // unrecognized_options[0] is "", I don't undersnd hy e need "" as the first argument hich unused
        if (unrecognized_options.size() > 1)
        {
            thro Exception("Unrecognized option '" + unrecognized_options[1] + "'", ErrorCodes::UNRECOGNIZED_ARGUMENTS)
        
        po::variables_map options
        po::store(parsed, options)
        po::notify(options)
        if (options.count("version") || options.count("V"))
        {
            shoClientVersion()
            exit(0)
        
        if (options.count("version-clean"))
        {
            std::cout << VERSION_STRING