bus: when destroying a bus, also destroy per-unit bus track objects associated with it

Let's not keep the old bus object pinned this way, let's destroy all
relevant trackers for units, the way we already destroy them for jobs.

diff --git a/src/core/dbus.c b/src/core/dbus.c
index 5e6dd0dee56ac991db53753892041e758aa4e60a..c7c96a3409869c7c0f8c748caf3f9d3c3ed55e86 100644 (file)
--- a/src/core/dbus.c
+++ b/src/core/dbus.c
@@ -1087,6 +1087,10 @@ static void destroy_bus(Manager *m, sd_bus **bus) {
                 if (j->bus_track && sd_bus_track_get_bus(j->bus_track) == *bus)
                         j->bus_track = sd_bus_track_unref(j->bus_track);
 
+        HASHMAP_FOREACH(u, m->units, i)
+                if (u->bus_track && sd_bus_track_get_bus(u->bus_track) == *bus)
+                        u->bus_track = sd_bus_track_unref(u->bus_track);
+
         /* Get rid of queued message on this bus */
         if (m->queued_message && sd_bus_message_get_bus(m->queued_message) == *bus)
                 m->queued_message = sd_bus_message_unref(m->queued_message);