[gnome-maps/wip/mlundblad/cleanup-gtk-deprecations] favoritesPopover: Stop using generic GtkContainer add method

[Marcus Lundblad <mlundblad src gnome org>]

commit daa30bc3caea51d6800aa41981fc55f1cd3de588
Author: Marcus Lundblad <ml update uu se>
Date:   Wed Mar 24 21:51:53 2021 +0100

    favoritesPopover: Stop using generic GtkContainer add method
    
    In preparation for GTK 4 use class-specific methods
    to add and remove children when possible.

 src/favoritesPopover.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/favoritesPopover.js b/src/favoritesPopover.js
index 097864ba..097c1e58 100644
--- a/src/favoritesPopover.js
+++ b/src/favoritesPopover.js
@@ -111,7 +111,7 @@ var FavoritesPopover = GObject.registerClass({
 
             let row = new PlaceListRow.PlaceListRow({ place: place,
                                                       can_focus: true });
-            this._list.add(row);
+            this._list.insert(row, -1);
             rows++;
         });