Fix GCC compilation complaints.

Bug: v8:11989
Change-Id: I547e61342be090cc31825d8fe49463a79a39495f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3553789Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79643}