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/login/logind-session.c b/src/login/logind-session.c
index 10a43a4a30..eeb58c9031 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -61,7 +61,7 @@ Session* session_new(Manager *m, const char *id) {
                 return NULL;
         }
 
-        s->devices = hashmap_new(devt_hash_func, devt_compare_func);
+        s->devices = hashmap_new(&devt_hash_ops);
         if (!s->devices) {
                 free(s->state_file);
                 free(s);