[PATCH] ntdll: Fix memchr implementation.

[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=83142

Your paranoid android.


=== debiant (build log) ===

error: patch failed: dlls/msvcrt/string.c:2621
error: patch failed: dlls/ntdll/string.c:72
error: patch failed: dlls/ntdll/tests/string.c:65
Task: Patch failed to apply

=== debiant (build log) ===

error: patch failed: dlls/msvcrt/string.c:2621
error: patch failed: dlls/ntdll/string.c:72
error: patch failed: dlls/ntdll/tests/string.c:65
Task: Patch failed to apply