From 5abf7e3d846b72ecf81cf193256de924ff8b6113 Mon Sep 17 00:00:00 2001
From: Zack Middleton <zturtleman@gmail.com>
Date: Mon, 7 May 2012 23:06:00 +0000
Subject: [PATCH] #5503 - SIGSEGV with r_vertexlight 1 in missionpack (patch by
 Serge Belyshev).

---
 code/renderer/tr_shader.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/code/renderer/tr_shader.c b/code/renderer/tr_shader.c
index 9bb64166..6beb6410 100644
--- a/code/renderer/tr_shader.c
+++ b/code/renderer/tr_shader.c
@@ -627,7 +627,7 @@ static qboolean ParseStage( shaderStage_t *stage, char **text )
 			else if ( !Q_stricmp( token, "$lightmap" ) )
 			{
 				stage->bundle[0].isLightmap = qtrue;
-				if ( shader.lightmapIndex < 0 ) {
+				if ( shader.lightmapIndex < 0 || !tr.lightmaps ) {
 					stage->bundle[0].image[0] = tr.whiteImage;
 				} else {
 					stage->bundle[0].image[0] = tr.lightmaps[shader.lightmapIndex];