fixed another memory leak in CSVParser::parse() (similar like before)

src/csv/csvparser.cpp

@@ -149,9 +149,9 @@ void CSVParser::parse()
 	if( lastc == -1 )
 	{
 		// an empty file/string, in such a case we return such a space struct (if would be serialized to json): [[]]
-		Space * row_space = new Space();
-		row_space->set_empty_table();
-		space->add(row_space);
+		Space row_space;
+		row_space.set_empty_table();
+		space->add(std::move(row_space));
 	}
 
 	while( lastc != -1 )