SDL: wayland: Add a note for why we check 0,0 for fullscreen configurations

From 4c9966eed6f54740374300b6407384c03c1ec65e Mon Sep 17 00:00:00 2001
From: Ethan Lee <[EMAIL REDACTED]>
Date: Thu, 16 Dec 2021 10:22:27 -0500
Subject: [PATCH] wayland: Add a note for why we check 0,0 for fullscreen
 configurations

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

diff --git a/src/video/wayland/SDL_waylandwindow.c b/src/video/wayland/SDL_waylandwindow.c
index 6d33caf38a3..f161c857f23 100644
--- a/src/video/wayland/SDL_waylandwindow.c
+++ b/src/video/wayland/SDL_waylandwindow.c
@@ -289,6 +289,9 @@ handle_configure_xdg_toplevel(void *data,
     } else {
         /* For fullscreen, foolishly do what the compositor says. If it's wrong,
          * don't blame us, we were explicitly instructed to do this.
+         *
+         * UPDATE: Nope, sure enough a compositor sends 0,0. This is a known bug:
+         * https://bugs.kde.org/show_bug.cgi?id=444962
          */
         if (width != 0 && height != 0) {
             window->w = width;