[nautilus] window-slot: only create x-content-bar if necessary

[Carlos Soriano Sánchez <csoriano src gnome org>]

commit 26192677c9ecf10573cf0df511fd093cfc6e6952
Author: Carlos Soriano <csoriano gnome org>
Date:   Mon Mar 7 11:52:45 2016 +0100

    window-slot: only create x-content-bar if necessary
    
    We were creating the x-content-bar every time, then the content bar
    was destroying itself (?) if no content type could be handled.
    Just avoid to create the content bar if no necessary.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=762703

 src/nautilus-window-slot.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/nautilus-window-slot.c b/src/nautilus-window-slot.c
index 54a5e6c..c12453b 100644
--- a/src/nautilus-window-slot.c
+++ b/src/nautilus-window-slot.c
@@ -1877,6 +1877,9 @@ nautilus_window_slot_show_x_content_bar (NautilusWindowSlot *slot, GMount *mount
 
        g_assert (NAUTILUS_IS_WINDOW_SLOT (slot));
 
+        if (!should_handle_content_types (x_content_types))
+                return;
+
        bar = nautilus_x_content_bar_new (mount, x_content_types);
        gtk_widget_show (bar);
        nautilus_window_slot_add_extra_location_widget (slot, bar);