Updated code comments

sql/sql_table.cc

@@ -10208,7 +10208,7 @@ bool mysql_alter_table(THD *thd, const LEX_CSTRING *new_db,
           {
             if ((table->key_info[n_key].flags & HA_NOSAME) &&
                 my_strcasecmp(system_charset_info,
-                              drop->name, table->key_info[n_key].name.str) == 0) // Merge todo: review '.str'
+                              drop->name, table->key_info[n_key].name.str) == 0)
             {
               drop->type= Alter_drop::KEY;
               alter_info->flags|= ALTER_DROP_INDEX;

storage/maria/ma_state.c

@@ -478,7 +478,7 @@ my_bool _ma_trnman_end_trans_hook(TRN *trn, my_bool commit,
           /*
             The change was done without using transid on rows (like in
             bulk insert). In this case this thread is the only one
-            that is using the table and all rows will be visble
+            that is using the table and all rows will be visible
             for all transactions.
           */
           _ma_reset_history(share);