From 1c01767a563acfb381007834dbc62665a8265096 Mon Sep 17 00:00:00 2001
From: Serhii Snitsaruk <limbonaut@pm.me>
Date: Mon, 26 Feb 2024 21:34:30 +0100
Subject: [PATCH] Fix crashing on HSM update with state transition

---
 hsm/limbo_hsm.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/hsm/limbo_hsm.cpp b/hsm/limbo_hsm.cpp
index 49e9145..37a190f 100644
--- a/hsm/limbo_hsm.cpp
+++ b/hsm/limbo_hsm.cpp
@@ -87,9 +87,12 @@ void LimboHSM::_exit() {
 
 void LimboHSM::_update(double p_delta) {
 	if (active) {
-		ERR_FAIL_COND(active_state == nullptr);
+		ERR_FAIL_NULL(active_state);
+		LimboState *last_active_state = active_state;
 		LimboState::_update(p_delta);
-		active_state->_update(p_delta);
+		if (last_active_state == active_state) {
+			active_state->_update(p_delta);
+		}
 	}
 }