Ruby

thread.c: must be initialized to set name

• thread.c (get_initialized_threadptr): extract ensuring that the
  thread is initialized.
• thread.c (rb_thread_setname): thread must be initialized to set
  the name. [ruby-core:74963] [Bug #12290]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54598 b2dd03c8-39d4-4d8f-98ff-823fe69b080e