The raw wasm printer was not printing the last entry of the
locals declarations. Now it does.

Bug: v8:8562
Change-Id: Ib51c674b747f95079c544131f18462d203f0933f
Reviewed-on: https://chromium-review.googlesource.com/c/1409364Reviewed-by: Clemens Hammacher <clemensh@chromium.org>
Commit-Queue: Stephan Herhut <herhut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#58805}