clapper: Mark item title as always parsed

This should be used internally for whether title is still used from parsing, not if parsing was successful.

Fixes an issue where in such cases correct title is not updated later on.

src/lib/clapper/clapper-media-item.c

@@ -814,7 +814,7 @@ clapper_media_item_constructed (GObject *object)
     self->uri = g_strdup ("file://");
 
   self->title = clapper_utils_title_from_uri (self->uri);
-  self->title_is_parsed = (self->title != NULL);
+  self->title_is_parsed = TRUE;
 
   G_OBJECT_CLASS (parent_class)->constructed (object);
 }