test_fileutils.rb: fix test

* test/fileutils/test_fileutils.rb (test_chown_error): splat uids.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44388 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-12-25

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44389 b2dd03c8-39d4-4d8f-98ff-823fe69b080e