From 7b1eb0b90690a247c8f19276ff987f53311278ba Mon Sep 17 00:00:00 2001
From: Spoike <acceptthis@users.sourceforge.net>
Date: Wed, 31 Jul 2013 18:00:11 +0000
Subject: [PATCH] don't crash on missing fog shaders.

git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4450 fc73d0e0-1445-4013-8a0c-d673dee63da5
---
 engine/gl/gl_backend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/engine/gl/gl_backend.c b/engine/gl/gl_backend.c
index 6a249691..ee99d8ed 100644
--- a/engine/gl/gl_backend.c
+++ b/engine/gl/gl_backend.c
@@ -3680,7 +3680,7 @@ static void DrawMeshes(void)
 				DrawPass(p);
 			}
 		}
-		if (shaderstate.curbatch->fog)
+		if (shaderstate.curbatch->fog && shaderstate.curbatch->fog->shader)
 		{
 			GL_DeSelectProgram();