Bluetooth: Mesh: Fix Set LPNTimeout message handling

We should ignore invalid addresses (helps pass
MESH/NODE/CFG/LPNPT/BI-01-C). Also fix a copy-paste issue in an error
log.

Signed-off-by: Johan Hedberg <[email protected]>

Author: Johan Hedberg

subsys/bluetooth/host/mesh/cfg.c

@@ -2489,12 +2489,17 @@ static void lpn_timeout_get(struct bt_mesh_model *model,
 	BT_DBG("net_idx 0x%04x app_idx 0x%04x src 0x%04x lpn_addr 0x%02x",
 	       ctx->net_idx, ctx->app_idx, ctx->addr, lpn_addr);
 
+	if (!BT_MESH_ADDR_IS_UNICAST(lpn_addr)) {
+		BT_WARN("Invalid LPNAddress; ignoring msg");
+		return;
+	}
+
 	bt_mesh_model_msg_init(msg, OP_LPN_TIMEOUT_STATUS);
 	net_buf_simple_add_le16(msg, lpn_addr);
 	memset(net_buf_simple_add(msg, 3), 0, 3);
 
 	if (bt_mesh_model_send(model, ctx, msg, NULL, NULL)) {
-		BT_ERR("Unable to send Friend Status");
+		BT_ERR("Unable to send LPN PollTimeout Status");
 	}
 }