return a->p == b->p && a->base_offset == b->base_offset;
}
-static int delta_base_cache_hash_cmp(const void *unused_cmp_data,
+static int delta_base_cache_hash_cmp(const void *cmp_data UNUSED,
const struct hashmap_entry *va,
const struct hashmap_entry *vb,
const void *vkey)