Possible endless loop in lto-wrapper

[Rafael Espindola]

> Hi Rafael,
>
> I'm sorry I cannot try the patch until next weekend.
> However, from a first look, it should work but I wonder: if the first
> maybe_unlink_file fails the others are never reached, leaving some
> temporary files in place. Is this ok?
>

Yes, I talked with Diego and he thinks that this is an unusual case
and it is better to just give up when the first unlink fails.

I have committed the patch, let me know if you see any issues.

> Thank you,
> Leandro
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Cheers,
-- 
Rafael Ávila de Espíndola