[MIRROR] Fixes to more Initialize procs (#2733)

* Fixes to more Initialize procs

* Update ai_monitored.dm

* Update cleanable.dm

* Update instruments.dm

* Update musician.dm

* Update noticeboard.dm

* Update mimic.dm

* Update interactive.dm

code/modules/clothing/chameleon.dm

@@ -431,7 +431,7 @@
 	chameleon_action.initialize_disguises()
 
 /obj/item/gun/energy/laser/chameleon/Initialize()
-	..()
+	. = ..()
 	projectile_copy_vars = list("name", "icon", "icon_state", "item_state", "speed", "color", "hitsound", "forcedodge", "impact_effect_type", "range", "suppressed", "hitsound_wall", "impact_effect_type", "pass_flags")
 	chameleon_projectile_vars = list("name" = "practice laser", "icon" = 'icons/obj/projectiles.dmi', "icon_state" = "laser")
 	gun_copy_vars = list("fire_sound", "burst_size", "fire_delay")

code/modules/clothing/head/helmet.dm

@@ -19,7 +19,7 @@
 
 
 /obj/item/clothing/head/helmet/Initialize()
-	..()
+	. = ..()
 
 /obj/item/clothing/head/helmet/sec
 	can_flashlight = 1
@@ -195,7 +195,7 @@
 	flags_2 = NONE
 
 /obj/item/clothing/head/helmet/knight/Initialize(mapload)
-	..()
+	. = ..()
 
 /obj/item/clothing/head/helmet/knight/blue
 	icon_state = "knight_blue"