Fixed implantpads runtiming if a case is not present (#18729)

* Atomization

* sdaf

---------

Co-authored-by: FluffyGhost <FluffyGhost>

code/game/objects/items/weapons/implants/implantpad.dm

@@ -14,7 +14,7 @@
 /obj/item/implantpad/update_icon()
 	cut_overlays()
 	icon_state = "implantpad-[case ? "1" : "0"]"
-	if(case.imp)
+	if(case?.imp)
 		var/obj/item/implant/caseimplant = case.imp
 		var/implant_overlay_icon_state = "implantstorage_[caseimplant.implant_icon]"
 		var/mutable_appearance/implant_case_implant_overlay = mutable_appearance(icon, implant_overlay_icon_state)
@@ -44,7 +44,7 @@
 	..()
 
 /obj/item/implantpad/attack_self(mob/user)
-	if(case.imp)
+	if(case?.imp)
 		case.imp.interact(user)
 	else
 		to_chat(user, SPAN_WARNING("There's no implant loaded in \the [src]!"))