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/analyze/analyze.c b/src/analyze/analyze.c
index 82f5cf3c57..5e55988063 100644
--- a/src/analyze/analyze.c
+++ b/src/analyze/analyze.c
@@ -907,7 +907,7 @@ static int analyze_critical_chain(sd_bus *bus, char *names[]) {
         if (n <= 0)
                 return n;
 
-        h = hashmap_new(string_hash_func, string_compare_func);
+        h = hashmap_new(&string_hash_ops);
         if (!h)
                 return -ENOMEM;