Fix an unwarranted assert, st->len can of course use the entire

storage space.

Fixes	590



git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4523 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishd/cache_esi.c

@@ -845,7 +845,7 @@ ESI_Parse(struct sess *sp)
 		VTAILQ_INSERT_TAIL(&ed->esibits, eb, list);
 	}
 
-	assert(st->len < st->space);
+	assert(st->len <= st->space);
 	assert(st->len == ew->space);
 	sp->obj->esidata = ed;