[PATCH][GOLD] Fix PR22233 gold segfault in relocate_erratum_stub on aarch64-linux-gnu

[Peter Smith]

>> This is a first time posting a fix to this mailing list so my
>> apologies for missing anything out.
>
> I can confirm that this fixes the linking of the testcases (haskell libraries).
> Please could that be applied to the trunk and the 2.29 branch?
>
> Matthias

General ping for this patch. The fix is one line, and together with
the fixes for PR20765 should fix the known problems with the
--fix-cortex-a53-843419 option.

Peter