Include cmath/math.h in DataTypes.h regardless of whether MSVC is being used.

Fixes MSVC build of LiveInterval.cpp.

Patch by Nicolas Capens.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@77317 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed