[unique/unique-1.1] Remove compiler warnings (cherry picked from commit f791ed16b19dddc7fbaf90d8f797520e67883021)

[Emmanuele Bassi <ebassi src gnome org>]

commit 9df132a70d54b768a8e1d0335d24b85ac9b3fb76
Author: Emmanuele Bassi <ebassi linux intel com>
Date:   Sun Mar 27 09:42:22 2011 +0100

    Remove compiler warnings
    (cherry picked from commit f791ed16b19dddc7fbaf90d8f797520e67883021)
    
    Signed-off-by: Emmanuele Bassi <ebassi linux intel com>

 unique/dbus/uniquebackend-dbus.c |   13 +++++++------
 1 files changed, 7 insertions(+), 6 deletions(-)
---
diff --git a/unique/dbus/uniquebackend-dbus.c b/unique/dbus/uniquebackend-dbus.c
index 3ae1bed..69faa00 100644
--- a/unique/dbus/uniquebackend-dbus.c
+++ b/unique/dbus/uniquebackend-dbus.c
@@ -84,7 +84,6 @@ unique_backend_dbus_register_proxy (UniqueBackendDBus *backend_dbus)
 static gboolean
 unique_backend_dbus_request_name (UniqueBackend *backend)
 {
-  UniqueBackendDBus *backend_dbus;
   const gchar *name;
   DBusGConnection *connection;
   DBusGProxy *proxy;
@@ -97,8 +96,6 @@ unique_backend_dbus_request_name (UniqueBackend *backend)
   if (!connection)
     return FALSE;
 
-  backend_dbus = UNIQUE_BACKEND_DBUS (backend);
-
   retval = TRUE;
   name = unique_backend_get_name (backend);
   g_assert (name != NULL);
@@ -207,10 +204,14 @@ unique_backend_dbus_send_message (UniqueBackend     *backend,
                                         cmd, data, time_,
                                         &resp,
                                         &error);
-  if (error)
+  if (!res)
     {
-      g_warning ("Error while sending message: %s", error->message);
-      g_error_free (error);
+      if (error)
+        {
+          g_warning ("Error while sending message: %s", error->message);
+          g_error_free (error);
+        }
+
       g_free (cmd);
       
       return UNIQUE_RESPONSE_INVALID;