[m-rev.] diff: fix an incorrect check

[Julien Fischer]

On Tue, 3 Nov 2026 at 00:18, Zoltan Somogyi <zoltan.somogyi at runbox.com> wrote:
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> On Tue, 3 Nov 2026 00:15:52 +1100, Julien Fischer <jfischer at opturion.com> wrote:
> > -    if (MR_stack_margin_size_words >= (sizeof(MR_Word) * MR_detstack_size)) {
> > +    if ((MR_stack_margin_size_words * sizeof(MR_Word)) >= MR_detstack_size) {
> >          MR_fatal_error("MR_init_memory: stack margin size far too big");
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> This strongly suggests that MR_detstack_size should be renamed
> to include the unit in its name.

Yes, there's already an XXX to that effect in mercury_wrapper.c; I intend
to address it.

Julien.
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