[gnome-control-center] color: Do not print '(null)' for virtual profiles

[Richard Hughes <rhughes src gnome org>]

commit 545d700142e0693db4317f20673715983d8722ab
Author: Richard Hughes <richard hughsie com>
Date:   Wed Feb 8 11:51:30 2012 +0000

    color: Do not print '(null)' for virtual profiles
    
    Virtual profiles (e.g. from the PPD for printers) don't have filenames, and so
    fall back to the ID for debugging.
    
    NOTE: this warning uncovered a bug in libcolord, which is fixed by commit
    876d961665d01f8c37094fe85b0130850a008051 in the colord project.

 panels/color/cc-color-panel.c |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)
---
diff --git a/panels/color/cc-color-panel.c b/panels/color/cc-color-panel.c
index add595f..c05eefb 100644
--- a/panels/color/cc-color-panel.c
+++ b/panels/color/cc-color-panel.c
@@ -1596,8 +1596,17 @@ gcm_prefs_device_set_model_by_iter (CcColorPanel *prefs, CdDevice *device, GtkTr
       /* ignore profiles from other user accounts */
       if (!cd_profile_has_access (profile))
         {
-          g_warning ("%s is not usable by this user",
-                     cd_profile_get_filename (profile));
+          /* only print the filename if it exists */
+          if (cd_profile_get_filename (profile) != NULL)
+            {
+              g_warning ("%s is not usable by this user",
+                         cd_profile_get_filename (profile));
+            }
+          else
+            {
+              g_warning ("%s is not usable by this user",
+                         cd_profile_get_id (profile));
+            }
           goto out;
         }
 #endif