Only set chunked mode if we actually want the body (ie: Not HEAD)

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@5690 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_center.c

@@ -197,7 +197,9 @@ cnt_deliver(struct sess *sp)
 			 * can make it any different size
 			 */
 			sp->wrk->res_mode |= RES_LEN;
-		else if (sp->http->protover >= 1.1) {
+		else if (!sp->wantbody) {
+			/* Nothing */
+		} else if (sp->http->protover >= 1.1) {
 			sp->wrk->res_mode |= RES_CHUNKED;
 		} else {
 			sp->wrk->res_mode |= RES_EOF;