[PATCH 1/3] ucrtbase: Support overriding return value in _matherr.

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=76438

Your paranoid android.


=== w2008s64 (64 bit report) ===

ucrtbase:
misc.c:826: Test failed: failed to change log10 return value: -nan(ind)

=== w1064v1507 (64 bit report) ===

ucrtbase:
misc.c:826: Test failed: failed to change log10 return value: -nan(ind)

=== w1064v1809 (64 bit report) ===

ucrtbase:
misc.c:826: Test failed: failed to change log10 return value: -nan(ind)