message: Add shim for libc::sysconf(libc::_SC_NPROCESSORS_CONF)
diff: @@ -180,6 +180,7 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
  let sysconfs = &[
  ("_SC_PAGESIZE", Scalar::from_int(PAGE_SIZE, this.pointer_size())),
  + ("_SC_NPROCESSORS_CONF", Scalar::from_int(NUM_CPUS, this.pointer_size())),
  ("_SC_NPROCESSORS_ONLN", Scalar::from_int(NUM_CPUS, this.pointer_size())),
  ];
  let mut result = None;
  