Optimize meta infos even more

src/de/steamwar/network/packets/NetworkPacket.java

@@ -27,7 +27,11 @@ import java.io.*;
 @EqualsAndHashCode
 public abstract class NetworkPacket implements Serializable {
 
-    public transient MetaInfos metaInfos;
+    private transient MetaInfos metaInfos;
+
+    public MetaInfos getMetaInfos() {
+        return metaInfos;
+    }
 
     @SneakyThrows
     public byte[] serialize() {