[nautilus/gnome-3-20] window: check for an active slot when updating cursor

[Ernestas Kulik <ernestask src gnome org>]

commit fbd7100875cac820bf8a089004bdf8da2c20eddb
Author: Ernestas Kulik <ernestask src gnome org>
Date:   Sun Nov 13 22:26:10 2016 +0200

    window: check for an active slot when updating cursor
    
    When updating the cursor, the existence of an active window slot is
    assumed when checking if it allows stopping. This can cause a crash if
    the last view is closed while it is still loading.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=773499

 src/nautilus-window.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/nautilus-window.c b/src/nautilus-window.c
index f3166f2..4d59413 100644
--- a/src/nautilus-window.c
+++ b/src/nautilus-window.c
@@ -750,7 +750,8 @@ update_cursor (NautilusWindow *window)
 
        slot = nautilus_window_get_active_slot (window);
 
-       if (nautilus_window_slot_get_allow_stop (slot)) {
+       if (slot != NULL &&
+           nautilus_window_slot_get_allow_stop (slot)) {
                 GdkDisplay *display;
 
                 display = gtk_widget_get_display (GTK_WIDGET (window));