[gnome-panel/wip/muktupavels/issue-42: 5/5] clock: fix memory leaks

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 2c4eb82d5f7e1a2ca40d26cea17532ed6bcac263
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Oct 16 22:20:48 2022 +0300

    clock: fix memory leaks
    
    https://gitlab.gnome.org/GNOME/gnome-panel/-/issues/42

 modules/clock/clock-applet.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/modules/clock/clock-applet.c b/modules/clock/clock-applet.c
index e94286f64..060774bd5 100644
--- a/modules/clock/clock-applet.c
+++ b/modules/clock/clock-applet.c
@@ -419,10 +419,10 @@ create_cities_store (ClockApplet *cd)
         }
 
        /* City name, Timezone name, Coordinates in lat/long */
-       cd->cities_store = g_object_ref (gtk_list_store_new (COL_CITY_LAST,
-                                                             G_TYPE_STRING,            /* COL_CITY_NAME */
-                                                             G_TYPE_STRING,            /* COL_CITY_TZ */
-                                                             CLOCK_LOCATION_TYPE));    /* COL_CITY_LOC */
+       cd->cities_store = gtk_list_store_new (COL_CITY_LAST,
+                                              G_TYPE_STRING,        /* COL_CITY_NAME */
+                                              G_TYPE_STRING,        /* COL_CITY_TZ */
+                                              CLOCK_LOCATION_TYPE); /* COL_CITY_LOC */
 
         list = g_list_copy (cities);
         list = g_list_sort (list, sort_locations_by_name);
@@ -1733,6 +1733,7 @@ clock_applet_dispose (GObject *object)
         g_clear_object (&applet->wall_clock);
 
         g_clear_pointer (&applet->calendar_popup, gtk_widget_destroy);
+        g_clear_pointer (&applet->prefs_window, gtk_widget_destroy);
 
         g_clear_object (&applet->datetime_appinfo);