Fixes 2 broken custom items, adds 1 new one

Fixes hazard hardsuit icon_state, paper icon_state missing for an item,
removed krinn_hatt from obj/clothing/hats.dmi since it's defined to be
in custom_items.dmi and added MiT labcoat

code/modules/customitems/item_defines.dm

@@ -848,6 +848,13 @@
 	icon = 'icons/obj/custom_items.dmi'
 	icon_state = "labcoat_pink_open"
 
+/obj/item/clothing/suit/storage/labcoat/fluff/mit
+	name = "MiT Labcoat"
+	desc = "A lab coat from the Martian Institute of Technology with the name 'Dr. Lucina Franco' embroidered onto the right breast pocket."
+	icon = 'icons/obj/custom_tiems.dmi'
+	icon_state = "mitlabcoat"
+	item_state = "mitlabcoat"
+
 /obj/item/clothing/suit/storage/det_suit/fluff/leatherjack //atomicdog92: Seth Sealis
 	name = "leather jacket"
 	desc = "A black leather coat, popular amongst punks, greasers, and other galactic scum."