Bug#24607 - MyISAM pointer size determined incorrectly

After merge fix

mysql-test/r/myisam.result

@@ -1640,5 +1640,5 @@ DROP TABLE t1;
 CREATE TABLE t1 (c1 TEXT) AVG_ROW_LENGTH=70100 MAX_ROWS=4100100100;
 SHOW TABLE STATUS LIKE 't1';
 Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment
-t1	MyISAM	9	Dynamic	X	X	X	72057594037927935	X	X	X	X	X	X	latin1_swedish_ci	X	max_rows=4100100100 avg_row_length=70100	
+t1	MyISAM	10	Dynamic	X	X	X	72057594037927935	X	X	X	X	X	X	latin1_swedish_ci	X	max_rows=4100100100 avg_row_length=70100	
 DROP TABLE t1;