From 9c343681c4b7149798d3eac33ac41343edcd3def Mon Sep 17 00:00:00 2001
From: "Ryan C. Gordon" <icculus@icculus.org>
Date: Wed, 27 May 2015 18:54:06 -0400
Subject: [PATCH] Wayland: Avoid NULL dereference after window destruction
 (thanks, "x414e54"!).

Fixes Bugzilla #2934.
---
 src/video/wayland/SDL_waylandevents.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/video/wayland/SDL_waylandevents.c b/src/video/wayland/SDL_waylandevents.c
index 6606dea039b23..3288d603314f4 100644
--- a/src/video/wayland/SDL_waylandevents.c
+++ b/src/video/wayland/SDL_waylandevents.c
@@ -293,6 +293,12 @@ keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
                       struct wl_array *keys)
 {
     struct SDL_WaylandInput *input = data;
+
+    if (!surface) {
+        /* enter event for a window we've just destroyed */
+        return;
+    }
+ 
     SDL_WindowData *window = wl_surface_get_user_data(surface);
 
     input->keyboard_focus = window;