message: Factor Option out of copy_cgu_workproduct_to_incr_comp_cache_dir call
  This improves clarity of the code a bit
diff: @@ -66,11 +66,7 @@ fn emit_module(
  let work_product = if backend_config.disable_incr_cache {
  None
  } else {
  - rustc_incremental::copy_cgu_workproduct_to_incr_comp_cache_dir(
  - tcx.sess,
  - &name,
  - Some(&tmp_file),
  - )
  + rustc_incremental::copy_cgu_workproduct_to_incr_comp_cache_dir(tcx.sess, &name, &tmp_file)
  };
  ModuleCodegenResult(
  