Fix schema self-validator not printing the regular schema errors

src/serialization/schema_validator.cpp

@@ -589,6 +589,7 @@ bool schema_self_validator::reference::can_find(const wml_tag& root, const confi
 
 void schema_self_validator::print(message_info& el)
 {
+	schema_validator::print(el);
 	switch(el.type) {
 	case WRONG_TYPE:
 		wrong_type_error(el.file, el.line, el.tag, el.key, el.value, create_exceptions_);

src/serialization/schema_validator.hpp

@@ -113,13 +113,13 @@ protected:
 
 	/** Controls the way to print errors. */
 	bool create_exceptions_;
+	
+	virtual void print(message_info&);
 private:
 
 	typedef std::deque<message_info> message_list;
 	typedef std::map<const config*, message_list> message_map;
 
-	virtual void print(message_info&);
-
 	/** Reads config from input. */
 	bool read_config_file(const std::string& filename);