Minor polish.

bin/varnishd/cache/cache_backend_probe.c

@@ -181,9 +181,9 @@ VBP_Update_Backend(struct vbp_target *vt)
 	chg = (i != vt->backend->sick);
 	vt->backend->sick = i;
 
-	AN(dir->vcl_name);
+	AN(vt->backend->vcl_name);
 	VSL(SLT_Backend_health, 0, "%s %s %s %s %u %u %u %.6f %.6f \"%s\"",
-	    dir->vcl_name, chg ? "Went" : "Still",
+	    vt->backend->vcl_name, chg ? "Went" : "Still",
 	    i ? "sick" : "healthy", bits,
 	    vt->good, vt->threshold, vt->window,
 	    vt->last, vt->avg, vt->resp_buf);

bin/varnishd/cache/cache_director.c

@@ -257,15 +257,11 @@ VRT_Healthy(VRT_CTX, VCL_BACKEND d, VCL_TIME *changed)
 VCL_VOID
 VRT_SetChanged(VCL_BACKEND d, VCL_TIME changed)
 {
-	if (d == NULL)
-		return;
 
-	CHECK_OBJ_NOTNULL(d, DIRECTOR_MAGIC);
-
-	if (changed <= d->vdir->health_changed)
-		return;
+	CHECK_OBJ_ORNULL(d, DIRECTOR_MAGIC);
 
-	d->vdir->health_changed = changed;
+	if (d != NULL && changed > d->vdir->health_changed)
+		d->vdir->health_changed = changed;
 }
 
 /* Send Event ----------------------------------------------------------