fixups for clang-20

This avoids -Werror=maybe-uninitialized

Tested: Unit Tests Pass

Change-Id: I9d9f953550675b4929cd069c82794a76c05f5bd6
Signed-off-by: Alexander Hansen <alexander.hansen@9elements.com>
Signed-off-by: Jagpal Singh Gill <paligill@gmail.com>
diff --git a/bmc/item_updater_helper.hpp b/bmc/item_updater_helper.hpp
index 2b10e8f..b90f498 100644
--- a/bmc/item_updater_helper.hpp
+++ b/bmc/item_updater_helper.hpp
@@ -66,7 +66,7 @@
 
   private:
     /** @brief Persistent sdbusplus D-Bus bus connection. */
-    sdbusplus::bus_t& bus;
+    [[maybe_unused]] sdbusplus::bus_t& bus;
 };
 
 } // namespace updater