[gnome-control-center] user-accounts: Fix small memory leak

[Ondrej Holy <oholy src gnome org>]

commit bf0a757c7f95319be76fa887e217c85fcb6356c7
Author: Robert Ancell <robert ancell canonical com>
Date:   Wed Nov 20 15:08:14 2019 +1300

    user-accounts: Fix small memory leak

 panels/user-accounts/cc-carousel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/panels/user-accounts/cc-carousel.c b/panels/user-accounts/cc-carousel.c
index 94f2e4979..703dbe215 100644
--- a/panels/user-accounts/cc-carousel.c
+++ b/panels/user-accounts/cc-carousel.c
@@ -301,7 +301,7 @@ cc_carousel_add (GtkContainer *container,
 
         last_box_is_full = ((g_list_length (self->children) - 1) % ITEMS_PER_PAGE == 0);
         if (last_box_is_full) {
-                gchar *page;
+                g_autofree gchar *page = NULL;
 
                 page = g_strdup_printf ("%d", CC_CAROUSEL_ITEM (widget)->page);
                 self->last_box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0);