fix warn

src/steer.c

@@ -356,7 +356,7 @@ void cntlr_update_sta_steer_data(struct controller *c, struct sta *s)
 {
 	struct steer_sta *ss = s->steer_data;
 	struct node *n = NULL;
-	struct netif_radio *r;
+	struct netif_radio *r = NULL;
 
 	trace("%s:--->\n", __func__);
 	memset(&ss->target, 0, sizeof(struct steer_sta_target_bss));