Failing test on AArch64

[Renato Golin via llvm-commits]

Folks,

This is none of tour doing, but I don't know who to ask... and "git
blame" pointed me at you three. :)

This test is failing:

http://lab.llvm.org:8011/builders/clang-cmake-aarch64-quick/builds/10463/steps/ninja%20check%201/logs/FAIL%3A%20Clang%3A%3Aoutput-file-cleanup.c

It started failing on a build with only Vedank's patch, which is
completely unrelated:

http://lab.llvm.org:8011/builders/clang-cmake-aarch64-quick/builds/10457

The test-suite failures are unrelated, which I fixed on the next
build, but the failure remained.

I can reproduce it on the buildbot, but I'm going on a long flight in
a few hours and won't have time to look at this at least until
Saturday evening, PST.

If any of you guys could have a look before me, that'd be great, and
the bots would be back to green. If not, I'll be back bugging you soon
enough. :)

cheers,
--renato