[ruby-cvs:67696] ko1:r60515 (trunk): check `ec` instead of `th`.

[ko1 at ruby-lang.org]

ko1	2017-10-28 20:20:17 +0900 (Sat, 28 Oct 2017)

  New Revision: 60515

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60515

  Log:
    check `ec` instead of `th`.
    
    * error.c (rb_bug): check `ec` instead of `th`.
    
    * error.c (rb_bug_context): ditto.

  Modified files:
    trunk/error.c