Hotfix Techhider NPE

FightSystem_Main/src/de/steamwar/fightsystem/utils/TechHider.java

@@ -88,7 +88,7 @@ public class TechHider extends StateDependent {
                 public void onPacketReceiving(PacketEvent e) {
                     Player p = e.getPlayer();
 
-                    if(p.getGameMode() == GameMode.SPECTATOR)
+                    if(p == null || p.getGameMode() == GameMode.SPECTATOR)
                         e.setCancelled(true);
                 }
             });