From a20175b6756b5846f01edab41b3271dd9befae54 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Wed, 14 Jul 2010 07:48:35 -0700
Subject: [PATCH] Fixed bug #1000

Don't crash if someone tries to delete a context after we've unloaded the library.  In this case it's SDL_compat that doesn't know SDL_VideoQuit() has been called.  Hmm...
---
 src/video/SDL_video.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 435f01696..1673d0e0a 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -3271,7 +3271,7 @@ SDL_GL_SwapWindow(SDL_Window * window)
 void
 SDL_GL_DeleteContext(SDL_GLContext context)
 {
-    if (!_this || !context) {
+    if (!_this || !_this->gl_data || !context) {
         return;
     }
     _this->GL_MakeCurrent(_this, NULL, NULL);