[polari] flatpak: Add fallback-x11 socket

[Florian Müllner <fmuellner src gnome org>]

commit edfffb554a35ade25e73bd96ee616af0aabf9e24
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Feb 20 00:05:13 2020 +0100

    flatpak: Add fallback-x11 socket
    
    If supported, "fallback-x11" takes precendence over "x11" and means
    that the X11 socket will only be mounted when wayland is unavailable.

 flatpak/org.gnome.Polari.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/flatpak/org.gnome.Polari.json b/flatpak/org.gnome.Polari.json
index d2f1179..9d5f4fb 100644
--- a/flatpak/org.gnome.Polari.json
+++ b/flatpak/org.gnome.Polari.json
@@ -9,7 +9,7 @@
     "desktop-file-name-prefix": "(Nightly) ",
     "finish-args": [
         /* X11 + XShm access */
-        "--share=ipc", "--socket=x11",
+        "--share=ipc", "--socket=x11", "--socket=fallback-x11",
         /* Wayland access */
         "--socket=wayland",
         /* Needs network, obviously */