optimization for bug report #68679

Author: krakjoe

ext/standard/dns.c

@@ -323,12 +323,12 @@ typedef union {
 
 #if defined(__GLIBC__) && !defined(HAVE_DEPRECATED_DNS_FUNCS)
 #define php_dns_free_res(__res__) _php_dns_free_res(__res__)
-static void _php_dns_free_res(struct __res_state res) { /* {{{ */
+static void _php_dns_free_res(struct __res_state *res) { /* {{{ */
 	int ns;
 	for (ns = 0; ns < MAXNS; ns++) {
-		if (res._u._ext.nsaddrs[ns] != NULL) {
-			free (res._u._ext.nsaddrs[ns]);
-			res._u._ext.nsaddrs[ns] = NULL;
+		if (res->_u._ext.nsaddrs[ns] != NULL) {
+			free (res->_u._ext.nsaddrs[ns]);
+			res->_u._ext.nsaddrs[ns] = NULL;
 		}
 	}
 } /* }}} */

ext/standard/php_dns.h

@@ -34,7 +34,7 @@
 			res_nsearch(res, dname, class, type, answer, anslen);
 #define php_dns_free_handle(res) \
 			res_nclose(res); \
-			php_dns_free_res(*res)
+			php_dns_free_res(res)
 
 #elif defined(HAVE_RES_SEARCH)
 #define php_dns_search(res, dname, class, type, answer, anslen) \