remote.c: drop hashmap_cmp_fn cast

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

remote.c

@@ -134,10 +134,14 @@ struct remotes_hash_key {
 };
 
 static int remotes_hash_cmp(const void *unused_cmp_data,
-			    const struct remote *a,
+			    const void *entry,
-			    const struct remote *b,
+			    const void *entry_or_key,
-			    const struct remotes_hash_key *key)
+			    const void *keydata)
 {
+	const struct remote *a = entry;
+	const struct remote *b = entry_or_key;
+	const struct remotes_hash_key *key = keydata;
+
 	if (key)
 		return strncmp(a->name, key->str, key->len) || a->name[key->len];
 	else
@@ -147,7 +151,7 @@ static int remotes_hash_cmp(const void *unused_cmp_data,
 static inline void init_remotes_hash(void)
 {
 	if (!remotes_hash.cmpfn)
-		hashmap_init(&remotes_hash, (hashmap_cmp_fn)remotes_hash_cmp, NULL, 0);
+		hashmap_init(&remotes_hash, remotes_hash_cmp, NULL, 0);
 }
 
 static struct remote *make_remote(const char *name, int len)