From 3fc4b05b72e60addc307f665cfe5f70d55eace87 Mon Sep 17 00:00:00 2001
From: GDN <96800819+GDNgit@users.noreply.github.com>
Date: Sun, 15 Jan 2023 17:10:51 -0600
Subject: [PATCH] fixes weed node gc issues (#20194)

---
 code/game/objects/structures/aliens.dm | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/code/game/objects/structures/aliens.dm b/code/game/objects/structures/aliens.dm
index 1235b7d9add..e1ea0b7f389 100644
--- a/code/game/objects/structures/aliens.dm
+++ b/code/game/objects/structures/aliens.dm
@@ -265,6 +265,7 @@
 		return
 	check_surroundings()
 	START_PROCESSING(SSobj, src)
+	RegisterSignal(linked_node, COMSIG_PARENT_QDELETING, PROC_REF(clear_linked_node))
 
 /obj/structure/alien/weeds/Destroy()
 	STOP_PROCESSING(SSobj, src)
@@ -274,6 +275,11 @@
 	clear_wall_weed()
 	return ..()
 
+/obj/structure/alien/weeds/proc/clear_linked_node()
+	SIGNAL_HANDLER
+	UnregisterSignal(linked_node, COMSIG_PARENT_QDELETING)
+	linked_node = null
+
 /obj/structure/alien/weeds/attack_alien(mob/living/carbon/alien/humanoid/user)
 	if(user.a_intent != INTENT_HARM)
 		return