Use _get_reconfigure_entry in vallox (#127313)

homeassistant/components/vallox/config_flow.py

@@ -89,9 +89,7 @@ class ValloxConfigFlow(ConfigFlow, domain=DOMAIN):
         self, entry_data: Mapping[str, Any]
     ) -> ConfigFlowResult:
         """Handle reconfiguration of the Vallox device host address."""
-        entry = self.hass.config_entries.async_get_entry(self.context["entry_id"])
-        assert entry
-        self._context_entry = entry
+        self._context_entry = self._get_reconfigure_entry()
         return await self.async_step_reconfigure_confirm()
 
     async def async_step_reconfigure_confirm(