Remove extra whitespace in result file

mysql-test/r/show_check.result:
  Remove extra whitespace

mysql-test/r/show_check.result

@@ -632,17 +632,17 @@ SHOW COLUMNS FROM no_such_table;
 ERROR 42S02: Table 'test.no_such_table' doesn't exist
 flush status;
 show status like 'slow_queries';
-Variable_name  Value
-Slow_queries 0
+Variable_name	Value
+Slow_queries	0
 show tables;
 Tables_in_test
 show status like 'slow_queries';
-Variable_name  Value
-Slow_queries 0
+Variable_name	Value
+Slow_queries	0
 select 1 from information_schema.tables limit 1;
 1
 1
 show status like 'slow_queries';
-Variable_name  Value
-Slow_queries 1
+Variable_name	Value
+Slow_queries	1
 End of 5.0 tests