runtime/pprof: fix TestCPUProfileWithFork on Windows/ARM
Use smaller heap on Windows/ARM, which generally does not have
page file enabled and therefore has limited virtual address space.
Updates #26148
Signed-off-by: Jordan Rhee <jordanrh@microsoft.com>
Change-Id: I4030be24a10fab7b9b659e3736b7e83f10710bfa
Reviewed-on: https://go-review.googlesource.com/c/153719
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org>