Make fields final if possible to ensure immutability

src/main/java/appeng/client/me/InternalSlotME.java

@@ -8,9 +8,9 @@ public class InternalSlotME
 
 	private final ItemRepo repo;
 
-	public int offset;
-	public int xPos;
-	public int yPos;
+	public final int offset;
+	public final int xPos;
+	public final int yPos;
 
 	public InternalSlotME(ItemRepo def, int offset, int displayX, int displayY) {
 		this.repo = def;

src/main/java/appeng/client/me/SlotDisconnected.java

@@ -10,7 +10,7 @@ import appeng.util.Platform;
 public class SlotDisconnected extends AppEngSlot
 {
 
-	public ClientDCInternalInv mySlot;
+	public final ClientDCInternalInv mySlot;
 
 	public SlotDisconnected(ClientDCInternalInv me, int which, int x, int y) {
 		super( me.inv, which, x, y );

src/main/java/appeng/client/me/SlotME.java

@@ -9,7 +9,7 @@ import appeng.api.storage.data.IAEItemStack;
 public class SlotME extends Slot
 {
 
-	public InternalSlotME mySlot;
+	public final InternalSlotME mySlot;
 
 	public SlotME(InternalSlotME me) {
 		super( null, 0, me.xPos, me.yPos );