This rethrows the underlying expression error if there is one.

Bug: v8:8409
Change-Id: Icc8253e4006c554df9f6a6d850b087b03d88de2d
Reviewed-on: https://chromium-review.googlesource.com/c/1319570Reviewed-by: Leszek Swirski <leszeks@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#57264}