Make fields final if possible to ensure immutability

src/main/java/appeng/util/iterators/ChainedIterator.java

@@ -6,7 +6,7 @@ public class ChainedIterator<T> implements Iterator<T>
 {
 
 	int offset = 0;
-	T[] list;
+	final T[] list;
 
 	public ChainedIterator(T... list) {
 		this.list = list;

src/main/java/appeng/util/iterators/ProxyNodeIterator.java

@@ -9,7 +9,7 @@ import appeng.api.networking.IGridNode;
 public class ProxyNodeIterator implements Iterator<IGridNode>
 {
 
-	Iterator<IGridHost> hosts;
+	final Iterator<IGridHost> hosts;
 
 	public ProxyNodeIterator(Iterator<IGridHost> hosts) {
 		this.hosts = hosts;