oidmap: use sha1hash() instead of static hash() function

Get rid of the static hash() function in oidmap.c which is redundant
with sha1hash(). Use sha1hash() directly instead.

Let's be more consistent and not use several hash functions doing
nearly exactly the same thing.

Signed-off-by: Christian Couder <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: chriscool

oidmap.c

@@ -12,13 +12,6 @@ static int oidmap_neq(const void *hashmap_cmp_fn_data,
 		      &((const struct oidmap_entry *) entry_or_key)->oid);
 }
 
-static int hash(const struct object_id *oid)
-{
-	int hash;
-	memcpy(&hash, oid->hash, sizeof(hash));
-	return hash;
-}
-
 void oidmap_init(struct oidmap *map, size_t initial_size)
 {
 	hashmap_init(&map->map, oidmap_neq, NULL, initial_size);
@@ -36,7 +29,7 @@ void *oidmap_get(const struct oidmap *map, const struct object_id *key)
 	if (!map->map.cmpfn)
 		return NULL;
 
-	return hashmap_get_from_hash(&map->map, hash(key), key);
+	return hashmap_get_from_hash(&map->map, sha1hash(key->hash), key);
 }
 
 void *oidmap_remove(struct oidmap *map, const struct object_id *key)
@@ -46,7 +39,7 @@ void *oidmap_remove(struct oidmap *map, const struct object_id *key)
 	if (!map->map.cmpfn)
 		oidmap_init(map, 0);
 
-	hashmap_entry_init(&entry, hash(key));
+	hashmap_entry_init(&entry, sha1hash(key->hash));
 	return hashmap_remove(&map->map, &entry, key);
 }
 
@@ -57,6 +50,6 @@ void *oidmap_put(struct oidmap *map, void *entry)
 	if (!map->map.cmpfn)
 		oidmap_init(map, 0);
 
-	hashmap_entry_init(&to_put->internal_entry, hash(&to_put->oid));
+	hashmap_entry_init(&to_put->internal_entry, sha1hash(to_put->oid.hash));
 	return hashmap_put(&map->map, to_put);
 }