[network-manager-applet] gsm: fix interpretation of unlock_required when no unlock is required

[Dan Williams <dcbw src gnome org>]

commit 8e1dedd6b96f5b87095b0caa1730f14ee7eab295
Author: Dan Williams <dcbw redhat com>
Date:   Thu Mar 4 09:44:14 2010 -0800

    gsm: fix interpretation of unlock_required when no unlock is required

 src/applet-device-gsm.c |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/src/applet-device-gsm.c b/src/applet-device-gsm.c
index f1a6a22..f028278 100644
--- a/src/applet-device-gsm.c
+++ b/src/applet-device-gsm.c
@@ -1036,9 +1036,17 @@ unlock_reply (DBusGProxy *proxy, DBusGProxyCall *call, gpointer user_data)
 	                           G_TYPE_VALUE, &value,
 	                           G_TYPE_INVALID)) {
 		if (G_VALUE_HOLDS_STRING (&value)) {
+			const char *new_val;
+
 			g_free (info->unlock_required);
-			info->unlock_required = g_value_dup_string (&value);
+			info->unlock_required = NULL;
+
+			/* Empty string means NULL */
+			new_val = g_value_get_string (&value);
+			if (new_val && strlen (new_val))
+				info->unlock_required = g_strdup (new_val);
 
+			/* Show the unlock dialog if an unlock is now required */
 			if (info->unlock_required)
 				unlock_dialog_new (info->device, info);
 		}