Bug #4769 Subqueries with Fulltext condition don't work

Description:
Using MATCH AGAINST in subquery doesn't work. 
 
Thanks to Björn Möller, which reported this bug on german newsgroup. 

How to repeat:
Tables and Data: 
 
create table t1 (a int not null auto_increment primary key, b varchar(40), fulltext(b)); 
Query OK, 0 rows affected (0.08 sec) 
 
insert into t1 (b) values ('ball'),('ball games'), ('games'), ('foo'), ('foobar'), ('Serg'), ('Sergei'),('Georg'),
('Patrik'),('Hakan'); 
 
create table t2 (a int); 
 
insert into t2 values (1),(3),(2),(7); 
 
select a,b from t1 where match(b) against ('Ball') > 0; 
+---+------------+ 
| a | b          | 
+---+------------+ 
| 1 | ball       | 
| 2 | ball games | 
+---+------------+ 
2 rows in set (0.08 sec) 
 
select a from t2 where a in (select a from t1 where match(b) against ('Ball') > 0); 
Empty set (0.04 sec)

Patch pending for approval.

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Additional info:

fixed in 4.1.4