Comment nits

Author: Girgias

Zend/zend_inheritance.c

@@ -426,7 +426,8 @@ static inheritance_status zend_perform_intersection_covariant_class_type_check(
 			if (!proto_ce) proto_ce = lookup_class(proto_scope, proto_class_name, register_unresolved);
 			fe_ce = ZEND_TYPE_CE(*single_type);
 		} else {
-			/* standard type */
+			/* standard type in an intersection type is impossible,
+			 * because it would be a fatal compile error */
 			ZEND_UNREACHABLE();
 			continue;
 		}

Zend/zend_types.h

@@ -109,7 +109,7 @@ typedef void (*copy_ctor_func_t)(zval *pElement);
  * It shouldn't be used directly. Only through ZEND_TYPE_* macros.
  *
  * ZEND_TYPE_IS_SET()        - checks if there is a type-hint
- * ZEND_TYPE_IS_ONLY_MASK() - checks if type-hint refer to standard type only
+ * ZEND_TYPE_IS_ONLY_MASK()  - checks if type-hint refer to standard type only
  * ZEND_TYPE_HAS_CLASS()     - checks if type-hint contains some class
  * ZEND_TYPE_HAS_CE()        - checks if type-hint contains some class as zend_class_entry *
  * ZEND_TYPE_HAS_NAME()      - checks if type-hint contains some class as zend_string *