Issue #28818: Simplify lookdict functions

Objects/dict-common.h

@@ -12,7 +12,7 @@ typedef struct {
  * -1 when no entry found, -3 when compare raises error.
  */
 typedef Py_ssize_t (*dict_lookup_func)
-(PyDictObject *mp, PyObject *key, Py_hash_t hash, PyObject ***value_addr,
+(PyDictObject *mp, PyObject *key, Py_hash_t hash, PyObject **value_addr,
  Py_ssize_t *hashpos);
 
 #define DKIX_EMPTY (-1)

Objects/odictobject.c

@@ -535,11 +535,11 @@ _odict_free_fast_nodes(PyODictObject *od) {
 static Py_ssize_t
 _odict_get_index_raw(PyODictObject *od, PyObject *key, Py_hash_t hash)
 {
-    PyObject **value_addr = NULL;
+    PyObject *value = NULL;
     PyDictKeysObject *keys = ((PyDictObject *)od)->ma_keys;
     Py_ssize_t ix;
 
-    ix = (keys->dk_lookup)((PyDictObject *)od, key, hash, &value_addr, NULL);
+    ix = (keys->dk_lookup)((PyDictObject *)od, key, hash, &value, NULL);
     if (ix == DKIX_EMPTY) {
         return keys->dk_nentries;  /* index of new entry */
     }