ExtensionCore.py: GtkLabel argument should be a string.

Fixes #13259

Author: mtwebster

files/usr/share/cinnamon/cinnamon-settings/bin/ExtensionCore.py

@@ -767,7 +767,7 @@ def __init__(self, uuid, data, spices, size_groups):
         score_box = Gtk.Box()
         score_image = Gtk.Image.new_from_icon_name('xsi-starred-symbolic', 2)
         score_box.pack_start(score_image, False, False, 0)
-        score_label = Gtk.Label(self.score)
+        score_label = Gtk.Label(label=str(self.score))
         score_box.pack_start(score_label, False, False, 5)
         widget.pack_start(score_box, False, False, 0)
         size_groups[1].add_widget(score_box)