youtube.lua: fix commit 9a746cfa

share/lua/playlist/youtube.lua

@@ -25,12 +25,11 @@ function get_url_param( url, name )
 end
 
 function get_arturl()
-    -- FIXME: vlc.strings() is not a function, it should probably be
-    -- vlc.strings.decode_uri()
-    --if string.match( vlc.path, "iurl=" ) then
-    --    return vlc.strings( get_url_param( vlc.path, "iurl" ) )
-    --end
-    video_id = get_url_param( vlc.path, "v" )
+    local iurl = get_url_param( vlc.path, "iurl" )
+    if iurl then
+        return iurl
+    end
+    local video_id = get_url_param( vlc.path, "v" )
     if not video_id then
         return nil
     end