[patch] Simplify Garbage_collection::add_reference a bit

[Rafael Espíndola]

I noticed I had the '&' close to the variable instead of the type.
Fixed in the attached patch.



On 2 February 2015 at 17:58, Rafael Espíndola
<rafael.espindola@gmail.com> wrote:
> this->section_reloc_map_[src_id] is created if it doesn't exist, so there
> is no point in doing a find.
>
> Cheers,
> Rafael
>
> 2014-09-18  Rafael Ávila de Espíndola <rafael.espindola@gmail.com>
>        * gc.h (Garbage_collection::add_reference): Don't use find.
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