[gnome-control-center] color: Fix warning about uninitialised variable

[Bastien Nocera <hadess src gnome org>]

commit 0bc99bdda3c0825dd6f048ffc2c529df52007fe9
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Oct 20 15:26:51 2011 +0100

    color: Fix warning about uninitialised variable

 panels/color/cc-color-panel.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/panels/color/cc-color-panel.c b/panels/color/cc-color-panel.c
index d4d0a36..8186651 100644
--- a/panels/color/cc-color-panel.c
+++ b/panels/color/cc-color-panel.c
@@ -1419,6 +1419,8 @@ gcm_prefs_get_profile_title (CcColorPanel *prefs, CdProfile *profile)
 
   g_return_val_if_fail (profile != NULL, NULL);
 
+  string = NULL;
+
   /* get properties */
   ret = cd_profile_connect_sync (profile,
                                  priv->cancellable,