Fix Applications Menu memory leak (Bug #102)

This patch reduces the amount of memory leaked every time xfdesktop's
Applications Menu is displayed via 'xfdesktop --menu'. Prior to this patch
the increase in memory consumption is about 2-4 MB, and after this patch
the memory increase is somewhere between 10 KB and 80 KB.

Co-authored-by: Theo Linkspfeifer <lastonestanding@tutanota.com>
Closes: https://gitlab.xfce.org/xfce/xfdesktop/-/issues/102

1 files changed, 2 insertions, 0 deletions

diff --git a/src/menu.c b/src/menu.c
index cafb2f5a..9fe96834 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -101,7 +101,9 @@ menu_populate(XfceDesktop *desktop,
     * a toplevel menu */
     else
     {
+        g_object_ref_sink(G_OBJECT(desktop_menu));
         xfce_gtk_menu_popup_until_mapped(GTK_MENU(desktop_menu), NULL, NULL, NULL, NULL, 3, gtk_get_current_event_time());
+        g_object_unref(G_OBJECT(desktop_menu));
     }
 }
 #endif /* USE_DESKTOP_MENU */