From: tszymanski <tszymanski@google.com>
Date: Thu, 27 Jul 2023 06:26:45 +0000 (-0700)
Subject: listitemmanager: Handle null roots in get_nearest_tile
X-Git-Tag: archive/raspbian/4.12.3+ds-1+rpi1~1^2^2^2~22^2~1^2~25^2
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=657c018242da774ecc28a40b1ff2f3b3f0a5b7a8;p=gtk4.git

listitemmanager: Handle null roots in get_nearest_tile

Rubberbanding still fails with "No item" warnings, but it no longer
crashes.

Closes #5970
---

diff --git a/gtk/gtklistitemmanager.c b/gtk/gtklistitemmanager.c
index d2b7c237ec..1ba0a29148 100644
--- a/gtk/gtklistitemmanager.c
+++ b/gtk/gtklistitemmanager.c
@@ -575,9 +575,14 @@ gtk_list_item_manager_get_nearest_tile (GtkListItemManager *self,
                                         int                 x,
                                         int                 y)
 {
+  GtkListTile *root;
   int distance = G_MAXINT;
 
-  return gtk_list_tile_get_tile_at (self, gtk_list_item_manager_get_root (self), x, y, &distance);
+  root = gtk_list_item_manager_get_root (self);
+  if (root == NULL)
+    return NULL;
+
+  return gtk_list_tile_get_tile_at (self, root, x, y, &distance);
 }
 
 guint