ox.h in ox-2.2.2

- old
+ new

@@ -237,9 +237,10 @@
 extern VALUE	ox_document_clas;
 extern VALUE	ox_element_clas;
 extern VALUE	ox_instruct_clas;
 extern VALUE	ox_bag_clas;
 extern VALUE	ox_comment_clas;
+extern VALUE	ox_raw_clas;
 extern VALUE	ox_doctype_clas;
 extern VALUE	ox_cdata_clas;
 
 extern Cache	ox_symbol_cache;
 extern Cache	ox_class_cache;