Revert "[TSan] Don't guard #include <xpc/xpc.h>"

This reverts commit 8191585b36eb4963002cce43fb2e79e7fb05c3d6.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@369165 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed