makes w_class use defines (#9848)

code/game/objects/items/devices/uplink.dm

@@ -350,7 +350,7 @@ A list of items and costs is stored under the datum of every game mode, alongsid
 	icon = 'icons/obj/radio.dmi'
 	icon_state = "radio"
 	flags = CONDUCT
-	w_class = 2
+	w_class = ITEMSIZE_SMALL
 
 /obj/item/device/contract_uplink/New(var/loc, var/mind)
 	..()
@@ -369,7 +369,7 @@ A list of items and costs is stored under the datum of every game mode, alongsid
 	icon = 'icons/obj/device.dmi'
 	icon_state = "locator"
 	desc_antag = "This device allows you to create a single central command report. It has only one use."
-	w_class = 2
+	w_class = ITEMSIZE_SMALL
 
 /obj/item/device/announcer/attack_self(mob/user as mob)
 	if(!player_is_antag(user.mind))
@@ -421,4 +421,4 @@ A list of items and costs is stored under the datum of every game mode, alongsid
 	name = "station bounced radio"
 	desc = null // SBRs have no desc
 	icon_state = "walkietalkie" // more incognito
-	starting_telecrystals = DEFAULT_TELECRYSTAL_AMOUNT * 2
+	starting_telecrystals = DEFAULT_TELECRYSTAL_AMOUNT * 2