Make fields final if possible to ensure immutability

src/main/java/appeng/tile/networking/TileWireless.java

@@ -33,7 +33,7 @@ public class TileWireless extends AENetworkInvTile implements IWirelessAccessPoi
 	public static final int CHANNEL_FLAG = 2;
 
 	final int sides[] = new int[] { 0 };
-	AppEngInternalInventory inv = new AppEngInternalInventory( this, 1 );
+	final AppEngInternalInventory inv = new AppEngInternalInventory( this, 1 );
 
 	public int clientFlags = 0;