SuperSimpleSpawners Modification (Line 246 Start)

if (placedBlock.getState() instanceof CreatureSpawner
                && player.getGameMode().equals(GameMode.SURVIVAL)) {
            if (player.getItemInHand().getAmount() > 1) { //Changed To player.getItemInHand() because itemInHand Was Changed in previous code.
                player.getItemInHand().setAmount(player.getItemInHand().getAmount() - 1);
            } else {
                player.setItemInHand(new ItemStack(Material.AIR)); //From Experience It Seems Setting To null Requires an Inventory Update but new ItemStack(Material.AIR) doesnt seem to need it.
            }
        }