runtime: Loosen conditions in TestMemstat in an attempt to fix the nacl/arm build.
runtime: Loosen conditions in TestMemstat in an attempt to fix the nacl/arm build.

LGTM=dvyukov
R=golang-codereviews, dvyukov
CC=golang-codereviews, khr
https://codereview.appspot.com/128680043

Committer: Dmitriy Vyukov <05e8181be3150e47da8fe2e1f18d381c75496ff4@google.com>

webfd/go-zh,bryanxu/go-zh,bryanxu/go-zh,bryanxu/go-zh,webfd/go-zh,sanjosh/sanjos100-tipc,d0f/go-zh,d0f/go-zh,webfd/go-zh,d0f/go-zh,d0f/go-zh,d0f/go-zh,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,bryanxu/go-zh,bryanxu/go-zh,d0f/go-zh,d0f/go-zh,bryanxu/go-zh,d0f/go-zh,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc,webfd/go-zh,bryanxu/go-zh,webfd/go-zh,webfd/go-zh,webfd/go-zh,bryanxu/go-zh,webfd/go-zh,sanjosh/sanjos100-tipc,sanjosh/sanjos100-tipc