stop the pills (#18703)

* RedPills Processing

Now you have to use START_PROCESSING(SSname, thing) (and STOP_PROCESSING)

* Fixes a minor bug.

code/modules/power/antimatter/shielding.dm

@@ -176,7 +176,7 @@
 /obj/machinery/am_shielding/proc/setup_core()
 	processing = 1
 	machines |= src
-	SSmachine.processing |= src
+	START_PROCESSING(SSmachine, src)
 	if(!control_unit)
 		return
 	control_unit.linked_cores.Add(src)

code/modules/power/cell.dm

@@ -20,22 +20,22 @@
 
 /obj/item/weapon/stock_parts/cell/New()
 	..()
-	SSobj.processing |= src
+	START_PROCESSING(SSobj, src)
 	charge = maxcharge
 	ratingdesc = " This one has a power rating of [maxcharge], and you should not swallow it."
 	desc = desc + ratingdesc
 	updateicon()
 
 /obj/item/weapon/stock_parts/cell/Destroy()
-	SSobj.processing.Remove(src)
+	STOP_PROCESSING(SSobj, src)
 	return ..()
 
 /obj/item/weapon/stock_parts/cell/on_varedit(modified_var)
 	if(modified_var == "self_recharge")
 		if(self_recharge)
-			SSobj.processing |= src
+			START_PROCESSING(SSobj, src)
 		else
-			SSobj.processing -= src
+			STOP_PROCESSING(SSobj, src)
 	..()
 
 /obj/item/weapon/stock_parts/cell/process()

code/modules/power/singularity/singularity.dm

@@ -34,7 +34,7 @@
 
 	src.energy = starting_energy
 	..()
-	SSobj.processing |= src
+	START_PROCESSING(SSobj, src)
 	poi_list |= src
 	for(var/obj/machinery/power/singularity_beacon/singubeacon in machines)
 		if(singubeacon.active)
@@ -43,7 +43,7 @@
 	return
 
 /obj/singularity/Destroy()
-	SSobj.processing.Remove(src)
+	STOP_PROCESSING(SSobj, src)
 	poi_list.Remove(src)
 	return ..()