Oops, don't override fetch failure status.

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4545 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_fetch.c

@@ -497,10 +497,11 @@ FetchBody(struct sess *sp)
 		mklen = 1;
 	}
 
-	if (http_HdrIs(hp, H_Connection, "close"))
+	if (cls == 0 && http_HdrIs(hp, H_Connection, "close"))
 		cls = 1;
 
-	if (hp->protover < 1.1 && !http_HdrIs(hp, H_Connection, "keep-alive"))
+	if (cls == 0 && hp->protover < 1.1 &&
+	    !http_HdrIs(hp, H_Connection, "keep-alive"))
 		cls = 1;
 
 	if (cls < 0) {