[gnome-panel] layout: fix memory leaks

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 48f51d1fb2779a33fd45b6325ea759cc2e73e4f1
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Mar 21 15:08:05 2021 +0200

    layout: fix memory leaks
    
    Coverity CID: #1502709, #1502714

 gnome-panel/panel-layout.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/gnome-panel/panel-layout.c b/gnome-panel/panel-layout.c
index 21d62299a..3ae48af03 100644
--- a/gnome-panel/panel-layout.c
+++ b/gnome-panel/panel-layout.c
@@ -432,6 +432,9 @@ panel_layout_append_group_helper (GKeyFile                  *keyfile,
                                      "Unknown key '%s' for %s",
                                      keyfile_keys[i],
                                      type_for_error_message);
+                        g_strfreev (keyfile_keys);
+                        g_object_unref (settings);
+                        g_free (unique_id);
                         return FALSE;
                 }