From cf1d5d309d93bca88ea7d5511b63f1e2560fb11c Mon Sep 17 00:00:00 2001
From: Sven Hesse <drmccoy@drmccoy.de>
Date: Sun, 22 Oct 2017 20:24:58 +0200
Subject: [PATCH] Don't X error in SDL_CreateWindow with unsupported GL
 attributes

---
 src/video/x11/SDL_x11opengl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/video/x11/SDL_x11opengl.c b/src/video/x11/SDL_x11opengl.c
index ab1bf58ca1..922c096173 100644
--- a/src/video/x11/SDL_x11opengl.c
+++ b/src/video/x11/SDL_x11opengl.c
@@ -463,7 +463,9 @@ X11_GL_InitExtensions(_THIS)
         }
     }
 
-    X11_XDestroyWindow(display, w);
+    if (w) {
+        X11_XDestroyWindow(display, w);
+    }
     X11_PumpEvents(_this);
 }