fix: crash if no player is it and no players are online

testing if the it player is null before trying to use it

src/main/java/io/github/seriousguy888/cheezsurvtaggame/Game.java

@@ -70,7 +70,12 @@ private void loadState() {
   }
 
   public void saveState() {
-    gameDataStorage.set("it", getIt().getUniqueId().toString());
+    OfflinePlayer it = getIt();
+    if(it == null) {
+      Bukkit.getLogger().warning("Current It was not saved as no player is It.");
+      return;
+    }
+    gameDataStorage.set("it", it.getUniqueId().toString());
 
     try {
       gameDataStorage.save(file);

src/main/java/io/github/seriousguy888/cheezsurvtaggame/TagEvents.java

@@ -65,7 +65,8 @@ public void onJoin(PlayerJoinEvent event) {
     plugin.game.loadTagStats(player);
 
     OfflinePlayer it = plugin.game.getIt();
-    player.sendMessage(ChatColor.GRAY + it.getName() + " is currently It.");
+    if(it != null)
+      player.sendMessage(ChatColor.GRAY + it.getName() + " is currently It.");
   }
 
   @EventHandler

src/main/java/io/github/seriousguy888/cheezsurvtaggame/runnables/ChooseRandomIt.java

@@ -16,7 +16,7 @@ public ChooseRandomIt(CheezSurvTagGame plugin) {
   @Override
   public void run() {
     OfflinePlayer currentIt = plugin.game.getIt();
-    if(currentIt.isOnline())
+    if(currentIt != null && currentIt.isOnline())
       return;
 
     Player newIt = plugin.game.pickRandomIt();