fix #13801 (imap_rfc822_parse_adrlist changes arg1)

diff --git a/ext/imap/php_imap.c b/ext/imap/php_imap.c
index 24f6999a9ed3dd8ee7cd06cba1e63adf2795c4d9..e87a4fa2a7f23185fd4bbe061b76cc4f0b760a75 100644 (file)
--- a/ext/imap/php_imap.c
+++ b/ext/imap/php_imap.c
@@ -2097,6 +2097,7 @@ PHP_FUNCTION(imap_rfc822_parse_adrlist)
                ZEND_WRONG_PARAM_COUNT();
        }
 
+       SEPARATE_ZVAL(str);
        convert_to_string_ex(str);
        convert_to_string_ex(defaulthost);