xbmc youtube 4.4.6 fix

diff --git a/YouTubeCore.py b/YouTubeCore.py
index d955e49..b088134 100644
--- a/YouTubeCore.py
+++ b/YouTubeCore.py
@@ -397,7 +397,10 @@ class YouTubeCore():
             return ret_obj

         if get("url_data"):
-            request = urllib2.Request(link, urllib.urlencode(get("url_data")))
+            args = {}
+            for key, value in get("url_data").iteritems():
+                args[key] = unicode(value).encode('utf-8')
+            request = urllib2.Request(link, urllib.urlencode(args))
             request.add_header('Content-Type', 'application/x-www-form-urlencoded')
         elif get("request", "false") == "false":
             if get("proxy"):