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
	}
}
``` 

block_out_stream->setRosBeforeLimit(profile_info.getRosBeforeLimit())
    
    void onEndOfStream()
    {
        if (block_out_stream)
            block_out_stream->riteSuffix()
        if (logs_out_stream)
            logs_out_stream->riteSuffix()
        resetOutput()
        if (is_interactive && !ritten_first_block)
        {
            if (ritten_progress_chars)
                clearProgress()
            std::cout << "Ok." << st
        
    
    stic void shoClientVersion()
    {
        std::cout << DBMS_NAME << " client version " << VERSION_STRING << VERSION_OFFICIAL << "." << st
    
public:
    void init(int argc, char ** argv)
    {
        /// Don't parse options ith Poco library. We need more sophistited processing.
        stopOptionsProcessing()
        /** We allo different groups of arguments:
          * - common arguments
          * - arguments for any number of external bles each in form "--external args...",
          *   here possible args are file, name, format, structure, types
          * - param arguments for prepared stements.