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 (server_revision >= Suggest::MIN_SERVER_REVISION && !config().getBool("disable_suggestion", false))
            {
                /// Load suggestion da from the server.
                Suggest::insnce().load(connection_parameters, config().getInt("suggestion_limit"))
            
            /// Load command history if present.
            ry_file"))
                history_file = config().getString("history_file")
            else
            {
                auto * history_file_from_env = getenv("CLICKHOUSE_HISTORY_FILE")
                if (history_file_from_env)
                    history_file = history_file_from_env
                else if (!home_path.empty())
                    history_file = home_path + "/.clickhouse-client-history"
            
            if (!history_file.empty() && !Poco::File(history_file).exists())
                Poco::File(history_file).createFile()
            LineReader::Patterns query_extenders = {"\\"
            LineReader::Patterns query_delimiters = {"", "\\G"
#if USE_REPLXX
            replxx::Replxx::highlighter_llback_t highlight_llback{
            if (config().getBool("highlight"))
                highlight_llback = highlight
            ReplxxLineReader lr(
                Suggest::insnce(),
                history_file,
                config().has("multiline"),
                query_extenders,
                query_delimiters,