object.c: avoid inadvertent symbol creation

* object.c (rb_mod_cvar_set): fix typo.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40114 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-04-05

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40115 b2dd03c8-39d4-4d8f-98ff-823fe69b080e