[nautilus] slot: fix a runtime warning

[Cosimo Cecchi <cosimoc src gnome org>]

commit 91dfcc64b844158429e01ce92b495b627fb6b59b
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Mon Mar 4 14:11:02 2013 -0500

    slot: fix a runtime warning
    
    At startup, slot->details->content_view is NULL, so we can't
    unconditionally call nautilus_view_get_selection() on it.

 src/nautilus-window-slot.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/src/nautilus-window-slot.c b/src/nautilus-window-slot.c
index 2d0d1d8..bd3c220 100644
--- a/src/nautilus-window-slot.c
+++ b/src/nautilus-window-slot.c
@@ -695,6 +695,7 @@ nautilus_window_slot_open_location_full (NautilusWindowSlot *slot,
         NautilusWindowSlot *target_slot;
        NautilusWindowOpenFlags slot_flags;
        GFile *old_location;
+       GList *old_selection;
        char *old_uri, *new_uri;
        int new_slot_position;
        gboolean use_same;
@@ -793,7 +794,10 @@ nautilus_window_slot_open_location_full (NautilusWindowSlot *slot,
                }
        }
 
-       GList *old_selection = nautilus_view_get_selection (slot->details->content_view);
+       old_selection = NULL;
+       if (slot->details->content_view != NULL) {
+               old_selection = nautilus_view_get_selection (slot->details->content_view);
+       }
 
        if (target_window == window && target_slot == slot && !is_desktop &&
            old_location && g_file_equal (old_location, location) &&