Improve warnings when there are leaked process before the Process.wait2 specs
Improve warnings when there are leaked process before the Process.wait2 specs

ruby/spec,ruby/rubyspec,ruby/rubyspec,eregon/rubyspec,nobu/rubyspec,eregon/rubyspec,eregon/rubyspec,ruby/spec,ruby/spec,nobu/rubyspec,nobu/rubyspec