Fix minor compilation issue on X64.

Fix minor compilation issue on X64.

R=lrn@chromium.org

Committed: http://code.google.com/p/v8/source/detail?r=9012

[Erik Corry, 2011-08-25 10:07:50]

Would it work just as well to make kPageSize into an intptr_t or does that cause
a cascade of other changes?

[Erik Corry, 2011-08-25 10:08:21]

On 2011/08/25 10:07:50, Erik Corry wrote:
> Would it work just as well to make kPageSize into an intptr_t or does that
cause
> a cascade of other changes?

And whichever solution you pick it LGTM.

[Lasse Reichstein, 2011-08-25 10:11:17]

What Erik says.
LGTM too.

[Michael Starzinger, 2011-08-25 10:47:57]

On 2011/08/25 10:07:50, Erik Corry wrote:
> Would it work just as well to make kPageSize into an intptr_t or does that
cause
> a cascade of other changes?

Yep, changing kPageSize would cause many other changes.