Sideports a couple of init unit tests from Neb.

code/game/objects/items/weapons/material/misc.dm

@@ -77,14 +77,14 @@
 		//visible_message("[user] has smashed the snowball in their hand!", "You smash the snowball in your hand.")
 		to_chat(user, "<span class='notice'>You smash the snowball in your hand.</span>")
 		var/atom/S = new /obj/item/stack/material/snow(user.loc)
-		del(src)
+		qdel(src)
 		user.put_in_hands(S)
 	else
 		//visible_message("[user] starts compacting the snowball.", "You start compacting the snowball.")
 		to_chat(user, "<span class='notice'>You start compacting the snowball.</span>")
 		if(do_after(user, 2 SECONDS))
 			var/atom/S = new /obj/item/weapon/material/snow/snowball/reinforced(user.loc)
-			del(src)
+			qdel(src)
 			user.put_in_hands(S)
 
 /obj/item/weapon/material/snow/snowball/reinforced

code/game/objects/items/weapons/tanks/tank_types.dm

@@ -174,7 +174,7 @@
 	gauge_icon = "indicator_emergency"
 
 /obj/item/weapon/tank/emergency/nitrogen/Initialize()
-	..()
+	. = ..()
 	src.air_contents.adjust_gas("nitrogen", (10*ONE_ATMOSPHERE)*volume/(R_IDEAL_GAS_EQUATION*T20C))
 
 /obj/item/weapon/tank/emergency/nitrogen/double

code/game/objects/items/weapons/tools/weldingtool.dm

@@ -671,7 +671,7 @@
 	always_process = TRUE
 
 /obj/item/weapon/weldingtool/electric/mounted/exosuit/Initialize()
-	..()
+	. = ..()
 
 	if(istype(loc, /obj/item/mecha_parts/mecha_equipment))
 		equip_mount = loc