[network-manager-applet] Fix another casting problem

[Matthias Clasen <matthiasc src gnome org>]

commit b0d4b4be413a943a552065027ba0e0dea7bdb4a5
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jun 30 08:41:24 2011 -0400

    Fix another casting problem

 src/applet-device-gsm.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/applet-device-gsm.c b/src/applet-device-gsm.c
index 8a27fea..c08d02e 100644
--- a/src/applet-device-gsm.c
+++ b/src/applet-device-gsm.c
@@ -663,7 +663,7 @@ ask_for_pin (GtkEntry **out_secret_entry)
 	gtk_box_pack_start (vbox, w, TRUE, TRUE, 0);
 
 #if GTK_CHECK_VERSION(3,1,6)
-        box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+        box = GTK_BOX (gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6));
 #else
 	box = GTK_BOX (gtk_hbox_new (FALSE, 6));
 #endif