`wp_dbus_connection_disable()` creates a new GCancellable
object at the end, which is never freed if the GObject
is then destroyed. To fix this, override `finalize()` and
clear everything there as well.
Direct leak of 64 byte(s) in 1 object(s) allocated from:
0 0x70e688efd1aa in calloc /usr/src/debug/gcc/gcc/libsanitizer/asan/asan_malloc_linux.cpp:77
1 0x70e6874b3e62 in g_malloc0 (/usr/lib/libglib-2.0.so.0+0x63e62) (BuildId: 7b781c8d1a6e2161838c5d8f3bd797797c132753)
2 0x70e6875dea75 in g_type_create_instance (/usr/lib/libgobject-2.0.so.0+0x3ea75) (BuildId: 5af5e0f7d0a900ecb6083fbd71e22e5522d872e2)
3 0x70e6875c3804 (/usr/lib/libgobject-2.0.so.0+0x23804) (BuildId: 5af5e0f7d0a900ecb6083fbd71e22e5522d872e2)
4 0x70e6875c4e7e in g_object_new_with_properties (/usr/lib/libgobject-2.0.so.0+0x24e7e) (BuildId: 5af5e0f7d0a900ecb6083fbd71e22e5522d872e2)
5 0x70e6875c5ed1 in g_object_new (/usr/lib/libgobject-2.0.so.0+0x25ed1) (BuildId: 5af5e0f7d0a900ecb6083fbd71e22e5522d872e2)
6 0x70e684d2a8a6 in wp_dbus_connection_disable ../subprojects/wireplumber/modules/module-dbus-connection.c:173
7 0x70e688a833cc in wp_plugin_deactivate ../subprojects/wireplumber/lib/wp/plugin.c:144
8 0x70e688a7126c in wp_object_deactivate ../subprojects/wireplumber/lib/wp/object.c:542
9 0x70e688a6e74e in wp_object_dispose ../subprojects/wireplumber/lib/wp/object.c:191
10 0x70e6875c0f6c in g_object_unref (/usr/lib/libgobject-2.0.so.0+0x20f6c) (BuildId: 5af5e0f7d0a900ecb6083fbd71e22e5522d872e2)
11 0x70e6841f7d6d in wp_portal_permissionstore_plugin_disable ../subprojects/wireplumber/modules/module-portal-permissionstore.c:207
12 0x70e688a833cc in wp_plugin_deactivate ../subprojects/wireplumber/lib/wp/plugin.c:144
[...]
Now that we have proper module load order, we can have this shared
dbus connection in a module instead of the library. The module has
to be loaded before any other modules that need it, obviously.
