SDL: wayland: Add a bug link for the detach FIXME

From 279aeb59be648f13a5f3f63cd466a6f2b354f206 Mon Sep 17 00:00:00 2001
From: Ethan Lee <[EMAIL REDACTED]>
Date: Wed, 6 Apr 2022 01:32:57 -0400
Subject: [PATCH] wayland: Add a bug link for the detach FIXME

---
 src/video/wayland/SDL_waylandwindow.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/video/wayland/SDL_waylandwindow.c b/src/video/wayland/SDL_waylandwindow.c
index 6e201a1bb1d..476083b21c5 100644
--- a/src/video/wayland/SDL_waylandwindow.c
+++ b/src/video/wayland/SDL_waylandwindow.c
@@ -1003,7 +1003,9 @@ void Wayland_ShowWindow(_THIS, SDL_Window *window)
      * be in both places at once? Possibly from renderers making commits? I can't
      * fully remember if this location caused crashes or if I was fixing a pair
      * of Hide/Show calls. In any case, UE gives us a pretty good test and having
-     * both detach calls passes.
+     * both detach calls passes. This bug may be relevant if I'm wrong:
+     *
+     * https://bugs.kde.org/show_bug.cgi?id=448856
      *
      * -flibit
      */