Merge pull request #355 from sk89q/bugfix/brushing-up

Replace RightClickEmpty with RightClickItem.

worldedit-forge/src/main/java/com/sk89q/worldedit/forge/ForgeWorldEdit.java

@@ -196,7 +196,7 @@ public class ForgeWorldEdit {
             if (we.handleRightClick(player)) {
                 event.setCanceled(true);
             }
-        } else if (event instanceof PlayerInteractEvent.RightClickEmpty) {
+        } else if (event instanceof PlayerInteractEvent.RightClickItem) {
             if (we.handleRightClick(player)) {
                 event.setCanceled(true);
             }