fixes https://github.com/Citadel-Station-13/Citadel-Station-13/issues/14452

and-might-have fi-x-ed https://github.com/Citadel-Station-13/Citadel-Station-13/issues/14450

code/game/objects/items/tanks/jetpack.dm

@@ -15,7 +15,7 @@
 	var/datum/effect_system/trail_follow/ion/ion_trail
 
 /obj/item/tank/jetpack/Initialize()
-	..()
+	. = ..()
 	ion_trail = new
 	ion_trail.set_up(src)
 
@@ -88,7 +88,7 @@
 	return TRUE
 
 /obj/item/tank/jetpack/suicide_act(mob/user)
-	if (istype(user, /mob/living/carbon/human/))
+	if (ishuman(user))
 		var/mob/living/carbon/human/H = user
 		H.forcesay("WHAT THE FUCK IS CARBON DIOXIDE?")
 		H.visible_message("<span class='suicide'>[user] is suffocating [user.p_them()]self with [src]! It looks like [user.p_they()] didn't read what that jetpack says!</span>")