Fix compilation of unwind on Darwin-x86_64

EHABI related typedef sugar is gated via LIBCXXABI_ARM_EHABI which did not
protect the EHABI header.  This would cause declarations to be emitted on
non-EHABI targets, resulting in errors.  This permits compilation on Darwin.

git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@228359 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed