Issue Description

null point exception from swim packet in another dimension just randomly walking around in the aether.

Steps to Reproduce

install the aether mod walk around enough and the fatal exception will occur maybe a mob is swimming in water?

Tropicraft Version: tropicraft-MC1.12.2-7.1.4.78
Forge Version: 1.12.2-forge1.12.2-14.23.4.2759

Crash log

Log:
https://gist.github.com/twrist/f2a8322164a43a294c06932d2bc5b688

Exception seems to be at the bottom: `Caused by: java.lang.NullPointerException
13:17:46 game info at net.tropicraft.core.client.PlayerSwimDataClientHandler.onMessage(PlayerSwimDataClientHandler.java:26)