[nautilus] Don't try to open a selection if we don't have one.

[Matthias Clasen <matthiasc src gnome org>]

commit 796f6c7123775d90089e586ef05eea4673b4f352
Author: Iain Lane <iain lane canonical com>
Date:   Mon Jun 30 11:00:00 2014 +0100

    Don't try to open a selection if we don't have one.
    
    Fixes a crash when the user invokes the open item (ctrl+alt+o) shortcut
    with no selection.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=732469

 src/nautilus-view.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/nautilus-view.c b/src/nautilus-view.c
index 2f091ea..7808843 100644
--- a/src/nautilus-view.c
+++ b/src/nautilus-view.c
@@ -1137,6 +1137,9 @@ action_open_item_location_callback (GtkAction *action,
        view = NAUTILUS_VIEW (callback_data);
        selection = nautilus_view_get_selection (view);
 
+       if (!selection)
+               return;
+
        item = NAUTILUS_FILE (selection->data);
        activation_location = nautilus_file_get_activation_location (item);
        activation_file = nautilus_file_get (activation_location);