merge revision(s) 39277:

	* test/ruby/test_thread.rb: fixed typo
	  patched by Hiroki Matsue via https://github.com/ruby/ruby/pull/248


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@39568 b2dd03c8-39d4-4d8f-98ff-823fe69b080e