[master] 79826a6 Assert that Vary setting succeeds

[Martin Blix Grydeland]

commit 79826a6ae5e25bdcd731dea1b3eb205133ed80aa
Author: Martin Blix Grydeland <martin at varnish-software.com>
Date:   Fri Oct 30 10:50:22 2015 +0100

    Assert that Vary setting succeeds

diff --git a/bin/varnishd/cache/cache_fetch.c b/bin/varnishd/cache/cache_fetch.c
index 83945b3..8febc5e 100644
--- a/bin/varnishd/cache/cache_fetch.c
+++ b/bin/varnishd/cache/cache_fetch.c
@@ -129,8 +129,8 @@ vbf_beresp2obj(struct busyobj *bo)
 		return (-1);
 
 	if (vary != NULL) {
-		b = ObjSetAttr(bo->wrk, bo->fetch_objcore, OA_VARY, varyl,
-		    VSB_data(vary));
+		AN(ObjSetAttr(bo->wrk, bo->fetch_objcore, OA_VARY, varyl,
+			VSB_data(vary)));
 		VSB_delete(vary);
 	}