prevent compiler warning

diff --git a/lib/hostip.c b/lib/hostip.c
index 5a173990bbed61096f6084d540b70d8fdbbdf6a1..cb63b4e1f9929d517d91ae66bed6170d57fe9ae3 100644 (file)
--- a/lib/hostip.c
+++ b/lib/hostip.c
@@ -562,6 +562,7 @@ Curl_addrinfo *Curl_getaddrinfo(struct SessionHandle *data,
     memset(buf, 0, CURL_NAMELOOKUP_SIZE);
 #ifdef HAVE_GETHOSTBYNAME_R_5
     /* Solaris, IRIX and more */
+    (void)res; /* prevent compiler warning */
     while(!h) {
       h = gethostbyname_r(hostname,
                           (struct hostent *)buf,