This is a very minor cleanup, which makes the output of
--trace-wasm-compiler more compact.

R=mstarzinger@chromium.org

Change-Id: I6b941f32e2ec6c3963e14dd376f8a1d65cf46ec6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1815254Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
Commit-Queue: Clemens Hammacher <clemensh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#63925}