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
	}
}
``` 

{
                        fprintf(stderr, "got boring ast\n")
                        continue
                    
                    parsed_query = ast_to_process
                    query_to_send = parsed_query->formatForErrorMessage()
                    processParsedSingleQuery()
                
                tch (...)
                {
                    last_exception_received_from_server = std::make_unique<Exception>(getCurrentExceptionMessage(true), getCurrentExceptionCode())
                    received_exception_from_server = true
                    std::cerr << "Error on processing query: " << ast_to_process->formatForErrorMessage() << st << last_exception_received_from_server->message()
                
                if (!connection->isConnected())
                {
                    // Probably the server is dead beuse e found an assertion
                    // failure. Fail fast.
                    r
                
                if (received_exception_from_server)
                {
                    // Query completed ith error, ignore it and fuzz again.
                    fprintf(stderr, "Got error, ill fuzz again\n")
                    received_exception_from_server = false
                    last_exception_received_from_server.reset()
                    continue
                
                else if (ast_to_process->formatForErrorMessage().size() > 500)
                {