MDEV-15865 Crash in dict_index_set_merge_threshold() on CREATE TABLE

Apply the contributed patch from
MySQL Bug #89126 create table panic on innobase_parse_hint_from_comment
by Yan Huang.

storage/innobase/handler/ha_innodb.cc

@@ -12948,10 +12948,9 @@ create_table_info_t::create_table_update_dict()
 		dict_table_autoinc_unlock(innobase_table);
 	}
 
-	dict_table_close(innobase_table, FALSE, FALSE);
-
 	innobase_parse_hint_from_comment(m_thd, innobase_table, m_form->s);
 
+	dict_table_close(innobase_table, FALSE, FALSE);
 	DBUG_RETURN(0);
 }