Merge pull request #4485 from out-of-phaze/fix/overlay-args

Fix invalid arguments to add_overlay

code/modules/hydroponics/seed_packets.dm

@@ -72,7 +72,7 @@
 		if(is_seeds)
 			underlays += overlay_image(seed_mask_icon, "seed-mask", seed.get_trait(TRAIT_PLANT_COLOUR), RESET_COLOR)
 		else
-			add_overlay(overlay_image(seed_mask_icon, "spore-mask"), null, RESET_COLOR)
+			add_overlay(overlay_image(seed_mask_icon, "spore-mask", null, RESET_COLOR))
 	update_strings(is_seeds)
 
 /obj/item/seeds/proc/update_strings(is_seeds)

code/modules/integrated_electronics/core/detailer.dm

@@ -39,7 +39,7 @@
 
 /obj/item/integrated_electronics/detailer/on_update_icon()
 	. = ..()
-	add_overlay('icons/obj/assemblies/electronic_tools.dmi', "detailer-color", detail_color)
+	add_overlay(overlay_image('icons/obj/assemblies/electronic_tools.dmi', "detailer-color", detail_color))
 
 /obj/item/integrated_electronics/detailer/attack_self(mob/user)
 	var/color_choice = input(user, "Select color.", "Assembly Detailer") as null|anything in color_list

code/modules/projectiles/guns/magnetic/magnetic.dm

@@ -69,19 +69,19 @@
 		if(cell)
 			add_overlay("[icon_state]_cell")
 		if(capacitor)
-			add_overlay(icon, "[icon_state]_capacitor")
+			add_overlay("[icon_state]_capacitor")
 	if(!cell || !capacitor)
-		add_overlay(icon, "[icon_state]_red")
+		add_overlay("[icon_state]_red")
 	else if(capacitor.charge < power_cost)
-		add_overlay(icon, "[icon_state]_amber")
+		add_overlay("[icon_state]_amber")
 	else
-		add_overlay(icon, "[icon_state]_green")
+		add_overlay("[icon_state]_green")
 	if(loaded)
-		add_overlay(icon, "[icon_state]_loaded")
+		add_overlay("[icon_state]_loaded")
 		var/obj/item/magnetic_ammo/mag = loaded
 		if(istype(mag))
 			if(mag.remaining)
-				add_overlay(icon, "[icon_state]_ammo")
+				add_overlay("[icon_state]_ammo")
 
 /obj/item/gun/magnetic/proc/show_ammo(var/mob/user)
 	if(loaded)