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
	}
}
``` 

argsToConfig(common_arguments, config(), 100)
        clearPassordFromCommandLine(argc, argv)
    
#pragma GCC diagnostic ignored "-Wunused-function"
#pragma GCC diagnostic ignored "-Wmissing-declarations"
int mainEntryClickHouseClient(int argc, char ** argv)
{
    try
    {
        DB::Client client
        client.init(argc, argv)
        return client.run()
    
    tch (const boost::program_options::error & e)
    {
        std::cerr << "Bad arguments: " << e.hat() << st
        return 1
    
    tch (const DB::Exception & e)
    {
        std::string text = e.displayText()
        std::cerr << "Code: " << e.code() << ". " << text << st
        return 1
    
    tch (...)
    {
        std::cerr << DB::getCurrentExceptionMessage(true) << st
        return 1