Fix FightfileConnection

src/de/steamwar/spectatesystem/FightfileConnection.java

@@ -35,7 +35,7 @@ public class FightfileConnection extends PacketSource {
     }
 
     @Override
-    public boolean isClosed() {
+    boolean isClosed() {
         try{
             return inputStream.available() == 0;
         }catch (IOException e){