maintainer-feedback requested: [Bug 258254] www/chromium: unbreak for i386

Bugzilla Automation <bugzilla@FreeBSD.org> has asked freebsd-chromium (Nobody)
<chromium@FreeBSD.org> for maintainer-feedback:
Bug 258254: www/chromium: unbreak for i386
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258254



--- Description ---
Find attached my suggestion how to unbreak the build for i386 (patch applies
with `git am`). The commit message should explain it:

---
www/chromium: unbreak on i386

FreeBSD's sendfile() expects a pointer to off_t for returning the copied
size. Change local variables used to off_t for OS_BSD: if any, this is
wider than the ssize_t used before (on amd64, it's the same).
---

I *think* this change would be correct for any arch, but please
challenge/review my reasoning.

Disclaimer: PR created on an old EeePC using the i386 build of chromium
92.0.4515.159_1 -- in the hope the changed code path is actually used for
attaching the patch here, but TBH, I have no idea whether this really is the
case.

I also needed to increase kern.maxtsiz for running chromium.