[gnome-user-share/gnome-2-28] Avoid crashing when dbus_g_proxy_call() fails but without an error

[Bastien Nocera <hadess src gnome org>]

commit 2e44d90797a18381efbc3ff5bdfee6185aef873d
Author: Bastien Nocera <hadess hadess net>
Date:   Tue Nov 10 16:27:13 2009 +0000

    Avoid crashing when dbus_g_proxy_call() fails but without an error
    
    See https://bugzilla.redhat.com/show_bug.cgi?id=533977

 src/obexftp.c |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/src/obexftp.c b/src/obexftp.c
index 89a98ce..9db90e6 100644
--- a/src/obexftp.c
+++ b/src/obexftp.c
@@ -110,11 +110,14 @@ obexftp_stop (gboolean stop_manager)
 		return;
 
 	if (dbus_g_proxy_call (server_proxy, "Close", &err, G_TYPE_INVALID, G_TYPE_INVALID) == FALSE) {
-		if (g_error_matches (err, DBUS_GERROR, DBUS_GERROR_REMOTE_EXCEPTION) == FALSE ||
+		if (err == NULL ||
+		    g_error_matches (err, DBUS_GERROR, DBUS_GERROR_REMOTE_EXCEPTION) == FALSE ||
 		    dbus_g_error_has_name (err, "org.openobex.Error.NotStarted") == FALSE) {
-			g_printerr ("Stopping Bluetooth ObexFTP server failed: %s\n",
-				    err->message);
-			g_error_free (err);
+			if (err != NULL) {
+				g_printerr ("Stopping Bluetooth ObexFTP server failed: %s\n",
+					    err->message);
+				g_error_free (err);
+			}
 			return;
 		}
 		g_error_free (err);