hw/core/machine: Clean up local variable shadowing

Fix:

  hw/core/machine.c: In function ‘machine_initfn’:
  hw/core/machine.c:1081:17: warning: declaration of ‘obj’ shadows a parameter [-Wshadow=compatible-local]
   1081 |         Object *obj = OBJECT(ms);
        |                 ^~~
  hw/core/machine.c:1065:36: note: shadowed declaration is here
   1065 | static void machine_initfn(Object *obj)
        |                            ~~~~~~~~^~~

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904162824.85385-2-philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

hw/core/machine.c

@@ -1082,8 +1082,6 @@ static void machine_initfn(Object *obj)
     ms->maxram_size = mc->default_ram_size;
 
     if (mc->nvdimm_supported) {
-        Object *obj = OBJECT(ms);
-
         ms->nvdimms_state = g_new0(NVDIMMState, 1);
         object_property_add_bool(obj, "nvdimm",
                                  machine_get_nvdimm, machine_set_nvdimm);