Ticket #956: undofix.diff

src/org/openstreetmap/josm/data/UndoRedoHandler.java

@@ -59 +59 @@
                         OsmDataLayer data = (OsmDataLayer)Main.map.mapView.getActiveLayer();
                         data.setModified(data.uploadedModified || !commands.isEmpty());
                         data.fireDataChange();
-                        fireCommandsChanged();
                 }               
+                fireCommandsChanged();
                 Main.ds.setSelected();
         }
 
@@ -78 +78 @@
                         OsmDataLayer data = (OsmDataLayer)Main.map.mapView.getActiveLayer();
                         data.setModified(true);
                         data.fireDataChange();
-                        fireCommandsChanged();
                 }
+                fireCommandsChanged();
         }
 
         public void fireCommandsChanged() {