[gnome-user-share] share-bar: Check whether bar is NULL before using it

[Bastien Nocera <hadess src gnome org>]

commit 3b1d2a537b771a16fbf79981fe31df2af2e0d245
Author: Mohammad DAMT <mdamt gnome org>
Date:   Sun Oct 27 16:43:00 2013 +0000

    share-bar: Check whether bar is NULL before using it
    
    https://bugzilla.gnome.org/show_bug.cgi?id=708456

 src/share-extension.c |   11 ++++++-----
 1 files changed, 6 insertions(+), 5 deletions(-)
---
diff --git a/src/share-extension.c b/src/share-extension.c
index c1654d4..eca98f6 100644
--- a/src/share-extension.c
+++ b/src/share-extension.c
@@ -121,7 +121,7 @@ nautilus_user_share_get_location_widget (NautilusLocationWidgetProvider *iface,
                                          GtkWidget                      *window)
 {
        GFile             *file;
-       GtkWidget         *bar;
+       GtkWidget         *bar = NULL;
        guint              i;
        gboolean           enable = FALSE;
        GFile             *home;
@@ -175,11 +175,12 @@ nautilus_user_share_get_location_widget (NautilusLocationWidgetProvider *iface,
 #endif /* HAVE_BLUETOOTH */
        }
 
-       g_signal_connect (bar, "response",
-                         G_CALLBACK (bar_response_cb),
-                         window);
+       if (bar != NULL) {
+               g_signal_connect (bar, "response",
+                                 G_CALLBACK (bar_response_cb), window);
 
-       gtk_widget_show_all (bar);
+               gtk_widget_show_all (bar);
+       }
 
        g_object_unref (file);