[gdm] user-manager: add forward declaration

[Ray Strode <halfline src gnome org>]

commit 68fbf55992773124b4f79118d4a1564c737a3195
Author: Ray Strode <rstrode redhat com>
Date:   Sun Oct 10 15:47:47 2010 -0400

    user-manager: add forward declaration
    
    This fixes a compiler warning.

 gui/simple-greeter/gdm-user-manager.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gui/simple-greeter/gdm-user-manager.c b/gui/simple-greeter/gdm-user-manager.c
index 112116c..6705acc 100644
--- a/gui/simple-greeter/gdm-user-manager.c
+++ b/gui/simple-greeter/gdm-user-manager.c
@@ -229,6 +229,7 @@ static void     fetch_user_locally             (GdmUserManager *manager,
                                                 const char     *username);
 static void     fetch_user_incrementally       (GdmUserManagerFetchUserRequest *request);
 
+static void     maybe_set_is_loaded            (GdmUserManager *manager);
 static gpointer user_manager_object = NULL;
 
 G_DEFINE_TYPE (GdmUserManager, gdm_user_manager, G_TYPE_OBJECT)