Fix for error message when using HANDLER OPEN on InnoDB tables.

mysql-test/r/innodb.result:
  Test that handler doesn't work with InnoDB
mysql-test/t/innodb.test:
  Test that handler doesn't work with InnoDB

mysql-test/r/innodb.result

@@ -900,8 +900,13 @@ explain select a,b,c from t1;
 table	type	possible_keys	key	key_len	ref	rows	Extra
 t1	ALL	NULL	NULL	NULL	NULL	4	
 drop table t1;
-create table t1 (testint int not null default 1) type=innodb;
+create table t1 (t int not null default 1, key (t)) type=innodb;
 desc t1;
 Field	Type	Null	Key	Default	Extra
-testint	int(11)			1	
+t	int(11)		MUL	1	
+handler t1 open t1;
+Table handler for 't1' doesn't have this option
+handler t1 read t first;
+Unknown table 't1' in HANDLER
+handler t1 close;
 drop table t1;

mysql-test/t/innodb.test

@@ -565,9 +565,14 @@ explain select a,b,c from t1;
 drop table t1;
 
 #
-# Check describe
+# Check describe & handler
 #
 
-create table t1 (testint int not null default 1) type=innodb;
+create table t1 (t int not null default 1, key (t)) type=innodb;
 desc t1;
+--error 1031
+handler t1 open t1;
+--error 1109
+handler t1 read t first;
+handler t1 close;
 drop table t1;

sql/mysql_priv.h

@@ -436,7 +436,7 @@ int mysqld_show(THD *thd, const char *wild, show_var_st *variables);
 
 /* sql_handler.cc */
 int mysql_ha_open(THD *thd, TABLE_LIST *tables);
-int mysql_ha_close(THD *thd, TABLE_LIST *tables);
+int mysql_ha_close(THD *thd, TABLE_LIST *tables, bool dont_send_ok=0);
 int mysql_ha_read(THD *, TABLE_LIST *,enum enum_ha_read_modes,char *,
                List<Item> *,enum ha_rkey_function,Item *,ha_rows,ha_rows);
 

sql/sql_handler.cc

@@ -58,6 +58,7 @@ int mysql_ha_open(THD *thd, TABLE_LIST *tables)
   if (!(tables->table->file->option_flag() & HA_CAN_SQL_HANDLER))
   {
     my_printf_error(ER_ILLEGAL_HA,ER(ER_ILLEGAL_HA),MYF(0), tables->name);
+    mysql_ha_close(thd, tables,1);
     return -1;
   }
 
@@ -65,7 +66,7 @@ int mysql_ha_open(THD *thd, TABLE_LIST *tables)
   return 0;
 }
 
-int mysql_ha_close(THD *thd, TABLE_LIST *tables)
+int mysql_ha_close(THD *thd, TABLE_LIST *tables, bool dont_send_ok)
 {
   TABLE **ptr=find_table_ptr_by_name(thd, tables->db, tables->name);
 
@@ -75,8 +76,8 @@ int mysql_ha_close(THD *thd, TABLE_LIST *tables)
     close_thread_table(thd, ptr);
     VOID(pthread_mutex_unlock(&LOCK_open));
   }
-
-  send_ok(&thd->net);
+  if (!dont_send_ok)
+    send_ok(&thd->net);
   return 0;
 }