[PATCH] stdio: Remove memory leak from multibyte convertion (BZ#25691)

[Florian Weimer]

* Adhemerval Zanella:

>> Is (BZ#25691) recognized by the commit hooks as a bug reference?
>> I thought it hat to be [BZ #25691] or (bug 25691).
>
> Good question, I am not sure. I will use [BZ #25691].

Just to be clear here: [BZ#25691] (without the space) is *not*
recognized by the scripts.