[gnome-maps/wip/mlundblad/cleanup-gtk-deprecations] placePopover: Stop using generic GtkContainer add and remove

[Marcus Lundblad <mlundblad src gnome org>]

commit 414de81151638c1fcb042314afbdb731d0a04f26
Author: Marcus Lundblad <ml update uu se>
Date:   Wed Mar 24 23:14:21 2021 +0100

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

 src/placePopover.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/placePopover.js b/src/placePopover.js
index 72917423..4a0f0d63 100644
--- a/src/placePopover.js
+++ b/src/placePopover.js
@@ -128,7 +128,7 @@ var PlacePopover = GObject.registerClass({
         let row = this._list.get_row_at_index(i);
 
         while (row) {
-            row.destroy();
+            this._list.remove(row);
             row = this._list.get_row_at_index(i);
         }
     }
@@ -138,6 +138,6 @@ var PlacePopover = GObject.registerClass({
                                                   searchString: searchString,
                                                   type: type,
                                                   can_focus: true });
-        this._list.add(row);
+        this._list.insert(row, -1);
     }
 });