[gnome-music] Create ~/.cache/media-art if folder does not exist Fix #700102

[Seif Lotfy <seiflotfy src gnome org>]

commit c660a5537f553ef83cf4b31582c088b60ad704ed
Author: Seif Lotfy <seif lotfy com>
Date:   Sun May 12 18:24:33 2013 +0200

    Create ~/.cache/media-art if folder does not exist
    Fix #700102

 src/albumArtCache.js |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/albumArtCache.js b/src/albumArtCache.js
index f56c028..e9e8d45 100644
--- a/src/albumArtCache.js
+++ b/src/albumArtCache.js
@@ -42,6 +42,12 @@ const AlbumArtCache = new Lang.Class({
             GLib.get_user_cache_dir(),
             "media-art"
         ]);
+        try {
+            var file = Gio.file_new_for_path(this.cacheDir);
+            file.make_directory(null);
+        }
+        catch (error) {
+        }
     },
 
     lookup: function(size, artist, album) {