Made the fields of Polygonal2DRegionSelector private.

src/main/java/com/sk89q/worldedit/regions/Polygonal2DRegionSelector.java

@@ -40,8 +40,8 @@ import com.sk89q.worldedit.cui.SelectionShapeEvent;
  * @author sk89q
  */
 public class Polygonal2DRegionSelector implements RegionSelector, CUIRegion {
-    protected BlockVector pos1;
-    protected Polygonal2DRegion region;
+    private BlockVector pos1;
+    private Polygonal2DRegion region;
 
     public Polygonal2DRegionSelector(LocalWorld world) {
         region = new Polygonal2DRegion(world);
@@ -212,6 +212,4 @@ public class Polygonal2DRegionSelector implements RegionSelector, CUIRegion {
     public String getLegacyTypeID() {
         return "polygon2d";
     }
-
-    
 }