path object is not a string. [Ruby2]
* gc.c (rb_gc_call_finalizer_at_exit): do not free threads in the
exit finalizers.
* io.c (rb_io_reopen): should use rb_io_check_io().
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@6114 b2dd03c8-39d4-4d8f-98ff-823fe69b080e