sync certainly.

* test/ruby/test_io.rb (test_race_closed_stream): awit for 'sleep' state.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58357 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_io.rb

@@ -3412,7 +3412,7 @@ __END__
         end
       end
       q.pop
-      sleep 0.1 # wait for blocking by r.gets
+      sleep 0.01 while thread.status != 'sleep'
       r.close
       assert_raise_with_message(IOError, /stream closed/) do
         thread.join