[gnome-photos] flatpak: Prevent X11 access in a Wayland session with newer Flatpak

[Debarshi Ray <debarshir src gnome org>]

commit d1c979ceb9031314ada956f2b03bda8aa295903b
Author: Debarshi Ray <debarshir gnome org>
Date:   Thu Sep 6 15:02:25 2018 +0200

    flatpak: Prevent X11 access in a Wayland session with newer Flatpak

 flatpak/org.gnome.Photos.json | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/flatpak/org.gnome.Photos.json b/flatpak/org.gnome.Photos.json
index 218e2c68..e21ece88 100644
--- a/flatpak/org.gnome.Photos.json
+++ b/flatpak/org.gnome.Photos.json
@@ -15,6 +15,7 @@
         "--filesystem=xdg-run/dconf",
         "--share=ipc",
         "--share=network",
+        "--socket=fallback-x11",
         "--socket=wayland",
         "--socket=x11",
         "--talk-name=ca.desrt.dconf",