From 54ada5be6de81bc7c40fcdcd3ba0ea291ab7d7e0 Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Wed, 21 Dec 2022 20:58:08 -0700
Subject: [PATCH] bspinfo: don't crash if light data is missing

---
 common/bspinfo.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/bspinfo.cc b/common/bspinfo.cc
index a0888e6b..8a094fe1 100644
--- a/common/bspinfo.cc
+++ b/common/bspinfo.cc
@@ -400,6 +400,10 @@ static void export_obj_and_lightmaps(const mbsp_t &bsp, const bspxentries_t &bsp
                 continue;
             }
 
+            if (bsp.dlightdata.empty()) {
+                continue;
+            }
+
             auto in_pixel =
                 bsp.dlightdata.begin() + rect.lightofs + (rect.extents.numsamples() * (is_rgb ? 3 : 1) * style_index);