Fix ia32 for v8_enable_webassembly=false.
This is not a configuration that we test on CQ or the waterfall, but
it was working at some point so this CL makes it compile again.

R=zhin@chromium.org

Change-Id: I78dafe08199c89ec24613a62a3085e923a51b43e
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3056450Reviewed-by: Zhi An Ng <zhin@chromium.org>
Commit-Queue: Clemens Backes <clemensb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75953}