[master] d89bbe7 Fix an assert to test that the object has "useful lifetime" which is not the same as a positive TTL any more.

[Poul-Henning Kamp]

commit d89bbe7f3123d856751d2d88a945d1401e26de36
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Tue Dec 17 10:17:10 2013 +0000

    Fix an assert to test that the object has "useful lifetime" which
    is not the same as a positive TTL any more.

diff --git a/bin/varnishd/storage/storage_persistent.c b/bin/varnishd/storage/storage_persistent.c
index 487a77e..d7506f0 100644
--- a/bin/varnishd/storage/storage_persistent.c
+++ b/bin/varnishd/storage/storage_persistent.c
@@ -521,7 +521,7 @@ smp_allocobj(struct stevedore *stv, struct busyobj *bo,
 	if (bo->fetch_objcore == NULL)
 		return (NULL);		/* from cnt_error */
 	CAST_OBJ_NOTNULL(sc, stv->priv, SMP_SC_MAGIC);
-	AN(bo->exp.ttl > 0.);
+	AN((bo->exp.ttl + bo->exp.grace + bo->exp.keep) > 0.);
 
 	ltot = IRNUP(sc, ltot);