Machinery: Always use update_use_power()

code/modules/food/kitchen/cooking_machines/_cooker.dm

@@ -10,7 +10,7 @@
 	icon = 'icons/obj/cooking_machines.dmi'
 	density = 1
 	anchored = 1
-	use_power = 1
+	use_power = USE_POWER_IDLE
 	idle_power_usage = 5
 
 	var/on_icon						// Icon state used when cooking.

code/modules/food/kitchen/gibber.dm

@@ -14,7 +14,7 @@
 	var/gib_time = 40        // Time from starting until meat appears
 	var/gib_throw_dir = WEST // Direction to spit meat and gibs in.
 
-	use_power = 1
+	use_power = USE_POWER_IDLE
 	idle_power_usage = 2
 	active_power_usage = 500
 

code/modules/food/kitchen/icecream.dm

@@ -14,7 +14,7 @@
 	icon_state = "icecream_vat"
 	density = 1
 	anchored = 0
-	use_power = 0
+	use_power = USE_POWER_OFF
 	flags = OPENCONTAINER | NOREACT
 
 	var/list/product_types = list()

code/modules/food/kitchen/microwave.dm

@@ -5,7 +5,7 @@
 	icon_state = "mw"
 	density = 1
 	anchored = 1
-	use_power = 1
+	use_power = USE_POWER_IDLE
 	idle_power_usage = 5
 	active_power_usage = 100
 	clicksound = "button"

code/modules/food/kitchen/smartfridge.dm

@@ -6,7 +6,7 @@
 	icon_state = "smartfridge"
 	density = 1
 	anchored = 1
-	use_power = 1
+	use_power = USE_POWER_IDLE
 	idle_power_usage = 5
 	active_power_usage = 100
 	flags = NOREACT