[epiphany] Add a FIXME for using the wallpaper portal

[Phaedrus Leeds <mwleeds src gnome org>]

commit 145e3dd2d2723d0f7cff1501961c61f1c74dddd0
Author: Phaedrus Leeds <mwleeds protonmail com>
Date:   Fri Dec 17 14:30:15 2021 -0800

    Add a FIXME for using the wallpaper portal

 src/popup-commands.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/popup-commands.c b/src/popup-commands.c
index ccb91725c..516f9c5c0 100644
--- a/src/popup-commands.c
+++ b/src/popup-commands.c
@@ -298,6 +298,7 @@ popup_cmd_set_image_as_background (GSimpleAction *action,
   char *dest_uri, *dest, *base, *base_converted;
   EphyDownload *download;
 
+  /* FIXME: Use wallpaper portal */
   if (ephy_is_running_inside_sandbox ())
     return;