[simple-scan] Don't show welcome page if autloaded document

[Robert Ancell <rancell src gnome org>]

commit bc8e5d0a6042fed1166abd483ac5cdabc12d7d97
Author: Robert Ancell <robert ancell canonical com>
Date:   Tue May 23 10:23:22 2017 +1200

    Don't show welcome page if autloaded document

 src/app-window.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/app-window.vala b/src/app-window.vala
index 9d0f982..3d73454 100644
--- a/src/app-window.vala
+++ b/src/app-window.vala
@@ -214,6 +214,7 @@ public class AppWindow : Gtk.ApplicationWindow
             book_needs_saving = false;
         else
         {
+            stack.set_visible_child_name ("document");
             book_view.selected_page = book.get_page (0);
             book_needs_saving = true;
             book_changed_cb (book);