adjust preprocessor symbol definition check relative to resolver specialty

1 files changed, 3 insertions, 2 deletions

diff --git a/lib/url.c b/lib/url.c
index 12e7e3639..9f7cd0ac5 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -2489,12 +2489,13 @@ static void conn_free(struct connectdata *conn)
   Curl_llist_destroy(conn->done_pipe, NULL);
 
   /* possible left-overs from the async name resolvers */
-#if defined(USE_ARES)
+#if defined(CURLRES_ASYNCH)
   Curl_safefree(conn->async.hostname);
   Curl_safefree(conn->async.os_specific);
-#elif defined(CURLRES_THREADED)
+#if defined(CURLRES_THREADED)
   Curl_destroy_thread_data(&conn->async);
 #endif
+#endif
 
   Curl_free_ssl_config(&conn->ssl_config);