merge revision(s) 41427:

	test_pty.rb: reap zombie

	* test/test_pty.rb (test_cloexec): reap zombie than leaving to
  detaching thread.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44182 b2dd03c8-39d4-4d8f-98ff-823fe69b080e