[gnome-usage/tracker-powered-storage-view-wip] storage: Fix segfault or critical error after delelete file

[Petr Štětka <pstetka src gnome org>]

commit b50a34d8b802b4fe51595aed55194ea513681f37
Author: Petr Štětka <pstetka redhat com>
Date:   Tue Oct 9 15:15:54 2018 +0200

    storage: Fix segfault or critical error after delelete file
    
    Fix segfault crash or gnome critical error after delete some file and
    then return up in the file hierarchy.

 src/storage/storage-view.vala | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/storage/storage-view.vala b/src/storage/storage-view.vala
index 47e8832..95f1fb8 100644
--- a/src/storage/storage-view.vala
+++ b/src/storage/storage-view.vala
@@ -295,6 +295,7 @@ public class Usage.NewStorageView : Usage.View {
         available_graph_item.custom_type = "available-graph";
         available_graph_item.percentage = available_graph_item.size * 100 / (double) total_size;
         model.append(available_graph_item);
+        graph.model = model;
     }
 
     private void refresh_actionbar() {