* ChangeLog: fix a typo at r43744.

* gc.c (is_mark_stack_empty): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43819 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-11-24

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43820 b2dd03c8-39d4-4d8f-98ff-823fe69b080e