[evolution] Bug 616640 - Don't display attachment size if it's unknown

[Matthew Barnes <mbarnes src gnome org>]

commit cadba671f336345f2b73728f757218b800439098
Author: Matthew Barnes <mbarnes redhat com>
Date:   Tue May 11 13:13:10 2010 -0500

    Bug 616640 - Don't display attachment size if it's unknown

 widgets/misc/e-attachment-tree-view.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/widgets/misc/e-attachment-tree-view.c b/widgets/misc/e-attachment-tree-view.c
index 42876e4..5729a68 100644
--- a/widgets/misc/e-attachment-tree-view.c
+++ b/widgets/misc/e-attachment-tree-view.c
@@ -100,15 +100,18 @@ attachment_tree_view_render_size (GtkTreeViewColumn *column,
                                   GtkTreeModel *model,
                                   GtkTreeIter *iter)
 {
-	gchar *display_size;
+	gchar *display_size = NULL;
 	gint column_id;
 	guint64 size;
 
 	column_id = E_ATTACHMENT_STORE_COLUMN_SIZE;
 	gtk_tree_model_get (model, iter, column_id, &size, -1);
 
-	display_size = g_format_size_for_display ((goffset) size);
+	if (size > 0)
+		display_size = g_format_size_for_display ((goffset) size);
+
 	g_object_set (renderer, "text", display_size, NULL);
+
 	g_free (display_size);
 }