[xdg-desktop-portal-gnome/gnome-42] wallpaper: Handle the error when storing an image in the cache

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 0ad441729b419447eeb54de35730336ae0ddf36b
Author: Debarshi Ray <debarshir gnome org>
Date:   Sat Jul 2 18:24:24 2022 +0200

    wallpaper: Handle the error when storing an image in the cache
    
    https://gitlab.gnome.org/GNOME/xdg-desktop-portal-gnome/-/merge_requests/46

 src/wallpaper.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)
---
diff --git a/src/wallpaper.c b/src/wallpaper.c
index b6c393d..6ba8376 100644
--- a/src/wallpaper.c
+++ b/src/wallpaper.c
@@ -105,13 +105,17 @@ on_file_copy_cb (GObject *source_object,
     }
 
   destination = g_file_new_for_path (handle->picture_uri);
-  g_file_replace_contents (destination,
-                           contents,
-                           length,
-                           NULL, FALSE,
-                           G_FILE_CREATE_REPLACE_DESTINATION,
-                           NULL, NULL,
-                           &error);
+  if (!g_file_replace_contents (destination,
+                                contents,
+                                length,
+                                NULL, FALSE,
+                                G_FILE_CREATE_REPLACE_DESTINATION,
+                                NULL, NULL,
+                                &error))
+    {
+      g_warning ("Failed to store image as '%s': %s", handle->picture_uri, error->message);
+      goto out;
+    }
 
   if (set_gsettings (BACKGROUND_SCHEMA, handle->picture_uri))
     handle->response = 0;