[sanitizer] Intercept sched_getaffinity.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187788 91177308-0d34-0410-b5e6-96231b3b80d8
[sanitizer] Fix NULL arg handling in setitimer/getitimer interceptors.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@187789 91177308-0d34-0410-b5e6-96231b3b80d8