[rygel] media-export: file filter may be null

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit aef878adb536978490f01176d570b07f0551fac1
Author: Jens Georg <mail jensge org>
Date:   Sat Aug 14 18:56:45 2010 +0300

    media-export: file filter may be null

 .../rygel-media-export-harvesting-task.vala        |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/plugins/media-export/rygel-media-export-harvesting-task.vala b/src/plugins/media-export/rygel-media-export-harvesting-task.vala
index 8652643..f133c69 100644
--- a/src/plugins/media-export/rygel-media-export-harvesting-task.vala
+++ b/src/plugins/media-export/rygel-media-export-harvesting-task.vala
@@ -44,7 +44,7 @@ public class Rygel.MediaExport.HarvestingTask : Rygel.StateMachine, GLib.Object
 
     public HarvestingTask (MetadataExtractor    extractor,
                            RecursiveFileMonitor monitor,
-                           Regex                file_filter,
+                           Regex?               file_filter,
                            File                 file,
                            MediaContainer       parent,
                            string?              flag = null) {