[rygel] media-export: Add null checks to standard XDG folders

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit 42a0f7b0809213da39ab1f7334c8b4596be12858
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Wed Sep 15 20:02:28 2010 +0300

    media-export: Add null checks to standard XDG folders

 .../rygel-media-export-root-container.vala         |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)
---
diff --git a/src/plugins/media-export/rygel-media-export-root-container.vala b/src/plugins/media-export/rygel-media-export-root-container.vala
index 6e573c9..0ccfe1b 100644
--- a/src/plugins/media-export/rygel-media-export-root-container.vala
+++ b/src/plugins/media-export/rygel-media-export-root-container.vala
@@ -196,9 +196,15 @@ public class Rygel.MediaExport.RootContainer : Rygel.MediaExport.DBContainer {
             var music_dir = Environment.get_user_special_dir
                                         (UserDirectory.MUSIC);
 
-            actual_uri = actual_uri.replace ("@PICTURES@", pictures_dir);
-            actual_uri = actual_uri.replace ("@VIDEOS@", videos_dir);
-            actual_uri = actual_uri.replace ("@MUSIC@", music_dir);
+            if (likely (pictures_dir != null)) {
+                actual_uri = actual_uri.replace ("@PICTURES@", pictures_dir);
+            }
+            if (likely (videos_dir != null)) {
+                actual_uri = actual_uri.replace ("@VIDEOS@", videos_dir);
+            }
+            if (likely (music_dir != null)) {
+                actual_uri = actual_uri.replace ("@MUSIC@", music_dir);
+            }
 
             actual_uris.add (actual_uri);
         }