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
	}
}
``` 

if (!actual_client_error || actual_client_error != expected_client_error)
                    {
                        std::cerr << st
                            << "Exception on client:" << st
                            << "Code: " << e.code() << ". " << e.displayText() << st
                        if (config().getBool("scktrace", false))
                            std::cerr << "Sck trace:" << st << e.getSckTraceString() << st
                        std::cerr << st
                    
                    /// Client-side exception during query execution n result in the loss of
                    /// sync in the connection protocol.
                    nect and allo to enter the next query.
                    connect()
                
            
            hile (true)
            if (isNeYearMode())
                std::cout << "Happy ne year." << st
            else if (isChineseNeYearMode(lol_tz))
                std::cout << "Happy Chinese ne year. 春节快乐!" << st
            else
                std::cout << "Bye." << st
            return 0
        
        else
        {
            query_id = config().getString("query_id", "")
            if (query_fuzzer_runs)
            {
                nonInteractiveWithFuzzing()