Fixes NOPOWER not updating when machines are moved

code/controllers/master_controller.dm

@@ -298,7 +298,11 @@ datum/controller/game_controller/proc/process_machines_power()
 				var/area/SubArea = A.related[j]
 				for(var/obj/machinery/M in SubArea)
 					if(M)
-						if(M.use_power)
+						//check if the area has power for M's channel
+						//this will keep stat updated in case the machine is moved from one area to another.
+						M.update_powered_status(A)	//we've already made sure A is a master area, above.
+							
+						if(!(M.stat & NOPOWER) && M.use_power)
 							M.auto_use_power()
 
 		if(A.apc.len && A.master == A)

code/modules/power/power.dm

@@ -77,6 +77,14 @@
 		stat |= NOPOWER
 	return
 
+//This is used by the master controller to update the NOPOWER flag
+//This will allow machines to update NOPOWER if they are moved from one area to another.
+//Does the same thing as power_change() but is optimized for the master controller.
+/obj/machinery/proc/update_powered_status(var/area/master_area)
+	if(master_area.powered(power_channel))
+		stat &= ~NOPOWER
+	else
+		stat |= NOPOWER
 
 // the powernet datum
 // each contiguous network of cables & nodes