From ed9c4e0c0dcb806aefb9426ada40cbdc5cea77e7 Mon Sep 17 00:00:00 2001
From: epenet <6771947+epenet@users.noreply.github.com>
Date: Wed, 31 Jul 2024 12:41:10 +0200
Subject: [PATCH] Fix implicit-return in landisgyr_heat_meter (#122912)

---
 homeassistant/components/landisgyr_heat_meter/__init__.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/homeassistant/components/landisgyr_heat_meter/__init__.py b/homeassistant/components/landisgyr_heat_meter/__init__.py
index 4e52e246d81..a2fc1320c2b 100644
--- a/homeassistant/components/landisgyr_heat_meter/__init__.py
+++ b/homeassistant/components/landisgyr_heat_meter/__init__.py
@@ -3,13 +3,14 @@
 from __future__ import annotations
 
 import logging
+from typing import Any
 
 import ultraheat_api
 
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_DEVICE, Platform
 from homeassistant.core import HomeAssistant, callback
-from homeassistant.helpers.entity_registry import async_migrate_entries
+from homeassistant.helpers.entity_registry import RegistryEntry, async_migrate_entries
 
 from .const import DOMAIN
 from .coordinator import UltraheatCoordinator
@@ -55,7 +56,9 @@ async def async_migrate_entry(hass: HomeAssistant, config_entry: ConfigEntry) ->
         device_number = config_entry.data["device_number"]
 
         @callback
-        def update_entity_unique_id(entity_entry):
+        def update_entity_unique_id(
+            entity_entry: RegistryEntry,
+        ) -> dict[str, Any] | None:
             """Update unique ID of entity entry."""
             if entity_entry.platform in entity_entry.unique_id:
                 return {
@@ -64,6 +67,7 @@ async def async_migrate_entry(hass: HomeAssistant, config_entry: ConfigEntry) ->
                         f"{device_number}",
                     )
                 }
+            return None
 
         await async_migrate_entries(
             hass, config_entry.entry_id, update_entity_unique_id