[sanitizer] Fix iOS build.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202374 91177308-0d34-0410-b5e6-96231b3b80d8
Add CODE_OWNERS.TXT

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@202377 91177308-0d34-0410-b5e6-96231b3b80d8