[ruby-cvs:64460] nobu:r57294 (trunk): thread.c: fix todo

[nobu at ruby-lang.org]

nobu	2017-01-10 19:57:26 +0900 (Tue, 10 Jan 2017)

  New Revision: 57294

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57294

  Log:
    thread.c: fix todo
    
    * thread.c (rb_threadptr_pending_interrupt_check_mask): traverse
      the super class chain instead of making ancestors array.

  Modified files:
    trunk/thread.c