From 13115ad21775a2237ea7e5081bd216f4e75dd0ad Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Tue, 8 Oct 2019 01:37:43 +0200
Subject: [PATCH] - another crash in Blood

---
 source/glbackend/gl_palmanager.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/source/glbackend/gl_palmanager.cpp b/source/glbackend/gl_palmanager.cpp
index a471fbcd3..7c8261e4a 100644
--- a/source/glbackend/gl_palmanager.cpp
+++ b/source/glbackend/gl_palmanager.cpp
@@ -122,6 +122,7 @@ unsigned PaletteManager::FindPalette(const uint8_t *paldata)
 
 unsigned PaletteManager::FindPalswap(const uint8_t* paldata)
 {
+	if (paldata == nullptr) return 0;
 	auto crc32 = CalcCRC32(paldata, 256 * numshades);
 	for (unsigned int i = 0; i < palswaps.Size(); i++)
 	{