Use same value to rethrow as was used before this change. This doesn't
appear to be explicitly tested anywhere, but the behavior should stay
unchanged nevertheless.

Change-Id: Idaed90a143e9775746f034190918065897094acb
Reviewed-on: https://chromium-review.googlesource.com/c/1329684Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Daniel Clifford <danno@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57472}