hashmap: introduce hash_ops to make struct Hashmap smaller

It is redundant to store 'hash' and 'compare' function pointers in
struct Hashmap separately. The functions always comprise a pair.
Store a single pointer to struct hash_ops instead.

systemd keeps hundreds of hashmaps, so this saves a little bit of
memory.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/core/bus-endpoint.c b/src/core/bus-endpoint.c
index 8d11974db4..1e8f07eb54 100644
--- a/src/core/bus-endpoint.c
+++ b/src/core/bus-endpoint.c
@@ -55,7 +55,7 @@ int bus_endpoint_add_policy(BusEndpoint *ep, const char *name, BusPolicyAccess a
                         return 0;
                 }
         } else {
-                ep->policy_hash = hashmap_new(string_hash_func, string_compare_func);
+                ep->policy_hash = hashmap_new(&string_hash_ops);
                 if (!ep->policy_hash)
                         return -ENOMEM;
         }