From 4275c8e96b3796e29760b3be113c44c52ce20a1a Mon Sep 17 00:00:00 2001
From: Jonathan G Rennison <j.g.rennison@gmail.com>
Date: Wed, 4 Jan 2023 18:56:00 +0000
Subject: [PATCH] VarAction2: Ignore callback failure groups when finding
 callback results

---
 src/newgrf_analysis.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/newgrf_analysis.cpp b/src/newgrf_analysis.cpp
index 595c1a3ea4..77ba2daa24 100644
--- a/src/newgrf_analysis.cpp
+++ b/src/newgrf_analysis.cpp
@@ -292,7 +292,7 @@ void DeterministicSpriteGroup::AnalyseCallbacks(AnalyseCallbackOperation &op) co
 
 void CallbackResultSpriteGroup::AnalyseCallbacks(AnalyseCallbackOperation &op) const
 {
-	if (op.mode == ACOM_FIND_CB_RESULT) op.result_flags |= ACORF_CB_RESULT_FOUND;
+	if (op.mode == ACOM_FIND_CB_RESULT && this->result != CALLBACK_FAILED) op.result_flags |= ACORF_CB_RESULT_FOUND;
 }
 
 void RandomizedSpriteGroup::AnalyseCallbacks(AnalyseCallbackOperation &op) const