r280065 - Fix for commit 280064 that break the build.

[Renato Golin via cfe-commits]

On 31 August 2016 at 11:30, Sjoerd Meijer <Sjoerd.Meijer at arm.com> wrote:
> Regression test test/CodeGen/noexceptionsfpmath.c makes sure -fno-trapping-math ends up as a function attribute, and I relied on that. Flag -fno-trapping-math is used a lot in test/Driver/fast-math.c, but you are right that there is no test that test that explicitly test the output for this. I will add a test case for that.

Thanks!
--renato