* ext/objspace/object_tracing.c (newobj_i): skip class_path if class
  is frozen.
  rb_class_path() can modify frozen classes (and causes errors).
  This patch is temporary. We need no-modification/no-allocation
  class path function.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43856 b2dd03c8-39d4-4d8f-98ff-823fe69b080e