fixes self repair runtime (#45065)

code/game/objects/items/robot/robot_upgrades.dm

@@ -296,7 +296,6 @@
 	var/msg_cooldown = 0
 	var/on = FALSE
 	var/powercost = 10
-	var/mob/living/silicon/robot/cyborg
 	var/datum/action/toggle_action
 
 /obj/item/borg/upgrade/selfrepair/action(mob/living/silicon/robot/R, user = usr)
@@ -307,7 +306,6 @@
 			to_chat(user, "<span class='warning'>This unit is already equipped with a self-repair module.</span>")
 			return FALSE
 
-		cyborg = R
 		icon_state = "selfrepair_off"
 		toggle_action = new /datum/action/item_action/toggle(src)
 		toggle_action.Grant(R)
@@ -315,34 +313,21 @@
 /obj/item/borg/upgrade/selfrepair/deactivate(mob/living/silicon/robot/R, user = usr)
 	. = ..()
 	if (.)
-		toggle_action.Remove(cyborg)
+		toggle_action.Remove(R)
 		QDEL_NULL(toggle_action)
-		cyborg = null
-		deactivate_sr()
-
-/obj/item/borg/upgrade/selfrepair/dropped()
-	. = ..()
-	addtimer(CALLBACK(src, .proc/check_dropped), 1)
-
-/obj/item/borg/upgrade/selfrepair/proc/check_dropped()
-	if(loc != cyborg)
-		toggle_action.Remove(cyborg)
-		QDEL_NULL(toggle_action)
-		cyborg = null
 		deactivate_sr()
 
 /obj/item/borg/upgrade/selfrepair/ui_action_click()
-	on = !on
 	if(on)
-		to_chat(cyborg, "<span class='notice'>You activate the self-repair module.</span>")
-		START_PROCESSING(SSobj, src)
+		to_chat(toggle_action.owner, "<span class='notice'>You deactivate the self-repair module.</span>")
+		deactivate_sr()
 	else
-		to_chat(cyborg, "<span class='notice'>You deactivate the self-repair module.</span>")
-		STOP_PROCESSING(SSobj, src)
-	update_icon()
+		to_chat(toggle_action.owner, "<span class='notice'>You activate the self-repair module.</span>")
+		activate_sr()
+
 
 /obj/item/borg/upgrade/selfrepair/update_icon()
-	if(cyborg)
+	if(toggle_action)
 		icon_state = "selfrepair_[on ? "on" : "off"]"
 		for(var/X in actions)
 			var/datum/action/A = X
@@ -350,6 +335,11 @@
 	else
 		icon_state = "cyborg_upgrade5"
 
+/obj/item/borg/upgrade/selfrepair/proc/activate_sr()
+	START_PROCESSING(SSobj, src)
+	on = TRUE
+	update_icon()
+
 /obj/item/borg/upgrade/selfrepair/proc/deactivate_sr()
 	STOP_PROCESSING(SSobj, src)
 	on = FALSE
@@ -360,7 +350,9 @@
 		repair_tick = 1
 		return
 
-	if(cyborg && (cyborg.stat != DEAD) && on)
+	var/mob/living/silicon/robot/cyborg = toggle_action.owner
+
+	if(istype(cyborg) && (cyborg.stat != DEAD) && on)
 		if(!cyborg.cell)
 			to_chat(cyborg, "<span class='warning'>Self-repair module deactivated. Please, insert the power cell.</span>")
 			deactivate_sr()