fix compile warning

diff --git a/ext/tidy/tidy.c b/ext/tidy/tidy.c
index 0838145325110b18f0d5995208cdc2b2df9a01d2..9dc4960cfd10887fc61bfbeb7d394c9b9c2ebfe0 100644 (file)
--- a/ext/tidy/tidy.c
+++ b/ext/tidy/tidy.c
@@ -739,12 +739,12 @@ static zend_object_value tidy_object_new_doc(zend_class_entry *class_type TSRMLS
        return retval;
 }
 
-static zend_class_entry *tidy_get_ce_node(zval *object TSRMLS_DC)
+static zend_class_entry *tidy_get_ce_node(const zval *object TSRMLS_DC)
 {
        return tidy_ce_node;
 }
 
-static zend_class_entry *tidy_get_ce_doc(zval *object TSRMLS_DC)
+static zend_class_entry *tidy_get_ce_doc(const zval *object TSRMLS_DC)
 {
        return tidy_ce_doc;
 }