Topo2 - Bug fix: Error in the breadcrumb service when navigating to a previous layer

Change-Id: I9afcee455d8832c51a06473bc8c4e7972b982530
diff --git a/web/gui/src/main/webapp/app/view/topo2/topo2Breadcrumb.js b/web/gui/src/main/webapp/app/view/topo2/topo2Breadcrumb.js
index 032cfb6..84421c9 100644
--- a/web/gui/src/main/webapp/app/view/topo2/topo2Breadcrumb.js
+++ b/web/gui/src/main/webapp/app/view/topo2/topo2Breadcrumb.js
@@ -62,8 +62,8 @@
             rid: data.id
         });
 
-        layout().createForceElements();
-        layout().transitionDownRegion();
+        layout.createForceElements();
+        layout.transitionDownRegion();
 
         render();
     }