[shotwell] Improve spacing in Sidebar

[Jens Georg <jensgeorg src gnome org>]

commit 4f177f68514ba45a48313ae0bbbc8985d897d542
Author: Jens Georg <mail jensge org>
Date:   Mon Apr 2 11:02:40 2018 +0200

    Improve spacing in Sidebar

 src/sidebar/Tree.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/sidebar/Tree.vala b/src/sidebar/Tree.vala
index 1720cb4..ea039ea 100644
--- a/src/sidebar/Tree.vala
+++ b/src/sidebar/Tree.vala
@@ -101,6 +101,7 @@ public class Sidebar.Tree : Gtk.TreeView {
         text_column.pack_start (icon_renderer, false);
         text_column.add_attribute(icon_renderer, "gicon", Columns.ICON);
         text_column.set_cell_data_func(icon_renderer, icon_renderer_function);
+        text_column.set_spacing(6);
         text_renderer = new Gtk.CellRendererText();
         text_renderer.ellipsize = Pango.EllipsizeMode.END;
         text_renderer.editing_canceled.connect(on_editing_canceled);