* test/ruby/test_process.rb (test_setsid): Added a workaround for
  MacOS X. Patch by nagachika. [Bug #7826] [ruby-core:52126]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39245 b2dd03c8-39d4-4d8f-98ff-823fe69b080e