From 7d86909a902cfc7ecb72cdbe80474920d66f0075 Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Mon, 17 Jan 2022 18:29:04 +0000
Subject: [PATCH] Ensure that sprite data is cleared when loading over an
 existing sprite

Fixes crash when looking at recolour sprite in sprite viewer window
which has been overriden by a non-recolour sprite by a faulty GRF
---
 src/spritecache.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/spritecache.cpp b/src/spritecache.cpp
index 3d73f89440..e191883783 100644
--- a/src/spritecache.cpp
+++ b/src/spritecache.cpp
@@ -727,6 +727,8 @@ bool LoadNextSprite(int load_index, SpriteFile &file, uint file_sprite_id)
 	if (data != nullptr) {
 		assert(data == _last_sprite_allocation.GetPtr());
 		sc->buffer = std::move(_last_sprite_allocation);
+	} else {
+		sc->buffer.Clear();
 	}
 	sc->lru = 0;
 	sc->id = file_sprite_id;