Made Node.getPosition final and fixed some whitespace in LocalWorld.

src/main/java/com/sk89q/worldedit/expression/runtime/Node.java

@@ -39,7 +39,7 @@ public abstract class Node implements RValue {
     }
 
     @Override
-    public int getPosition() {
+    public final int getPosition() {
         return position;
     }
 }