Fix crash when copying entity data

Fixes https://github.com/nea89o/Firmament/issues/35

src/main/kotlin/moe/nea/firmament/features/debug/PowerUserTools.kt

@@ -96,7 +96,7 @@ object PowerUserTools : FirmamentFeature {
         }
         MC.sendChat(Text.stringifiedTranslatable("firmament.poweruser.entity.passengers", target.passengerList.size))
         target.passengerList.forEach {
-            showEntity(target)
+            showEntity(it)
         }
     }