[rygel] core: Don't use now deprecated functions

[Zeeshan Ali Khattak <zeeshanak src gnome org>]

commit b984d17e37f38ad4608b7b7d8fec4d7220e42500
Author: Zeeshan Ali (Khattak) <zeeshanak gnome org>
Date:   Mon Jan 31 17:21:19 2011 +0200

    core: Don't use now deprecated functions

 src/rygel/rygel-subtitle-manager.vala |    7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/src/rygel/rygel-subtitle-manager.vala b/src/rygel/rygel-subtitle-manager.vala
index b47fe78..e4065eb 100644
--- a/src/rygel/rygel-subtitle-manager.vala
+++ b/src/rygel/rygel-subtitle-manager.vala
@@ -45,10 +45,9 @@ internal class Rygel.SubtitleManager : GLib.Object {
 
         var directory = video_file.get_parent ();
         var filename = video_file.get_basename ();
-        var extension = filename.rchr (-1, '.');
-        if (extension != null) {
-            filename = filename.substring (0,
-                                           filename.length - extension.length);
+        var ext_index = filename.last_index_of_char ('.');
+        if (ext_index >= 0) {
+            filename = filename[0:ext_index];
         }
         // FIXME: foreach ".eng.srt", ".ger.srt", ".srt"...
         // FIXME: case insensitive?