Couple of command fixes

fixes #899

worldedit-core/src/main/java/com/sk89q/worldedit/command/BrushCommands.java

@@ -344,7 +344,6 @@ public class BrushCommands {
                               @Switch(name = 'd', desc = "sags the catenary toward the facing direction")
                                   boolean facingDirection) throws WorldEditException {
         worldEdit.checkMaxBrushRadius(radius);
-        Brush brush = new CatenaryBrush(shell, select, facingDirection, lengthFactor);
         set(context, new CatenaryBrush(shell, select, facingDirection, lengthFactor))
             .setSize(radius).setFill(fill);
     }

worldedit-core/src/main/java/com/sk89q/worldedit/command/ToolUtilCommands.java

@@ -284,7 +284,7 @@ public class ToolUtilCommands {
     )
     @CommandPermissions("worldedit.brush.targetoffset")
     public void targetOffset(Player player, EditSession editSession, LocalSession session,
-                             int offset) throws WorldEditException {
+                             @Arg(name = "offset", desc = "offset", def = "0") int offset) throws WorldEditException {
         BrushTool tool = session.getBrushTool(player, false);
         if (tool == null) {
             player.print(TranslatableComponent.of("fawe.worldedit.brush.brush.none"));