Fix Windcharge Damage on Arena

Signed-off-by: Chaoscaot <max@maxsp.de>

FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/listener/Permanent.java

@@ -35,6 +35,7 @@ import org.bukkit.GameMode;
 import org.bukkit.Material;
 import org.bukkit.block.Block;
 import org.bukkit.entity.Player;
+import org.bukkit.entity.TNTPrimed;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
@@ -180,6 +181,7 @@ public class Permanent implements Listener {
 
     @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
     public void onExplosion(EntityExplodeEvent e) {
+        if (!(e.getEntity() instanceof TNTPrimed)) return;
         e.blockList().removeIf(block -> {
             if(block.getType() == Material.TNT) {
                 return false;