Merge pull request #16238 from keszybz/set-handling-more

Fix handling of cases where a duplicate item is added to a set and related cleanups

src/shared/userdb.c

@@ -377,15 +377,9 @@ static int userdb_connect(
         if (r < 0)
                 return log_debug_errno(r, "Failed to invoke varlink method: %m");
 
-        r = set_ensure_allocated(&iterator->links, &link_hash_ops);
-        if (r < 0)
-                return log_debug_errno(r, "Failed to allocate set: %m");
-
-        r = set_put(iterator->links, vl);
+        r = set_ensure_consume(&iterator->links, &link_hash_ops, TAKE_PTR(vl));
         if (r < 0)
                 return log_debug_errno(r, "Failed to add varlink connection to set: %m");
-
-        TAKE_PTR(vl);
         return r;
 }