Fix operand_equal_p hash and copare of ODR_TYPE_REF

	* fold-const.c (operand_compare::operand_equal_p): More OBJ_TYPE_REF
	matching to correct place; drop OEP_ADDRESS_OF for TOKEN, OBJECT and
	class.
	(operand_compare::hash_operand): Hash ODR type for OBJ_TYPE_REF.