Shorten code for retrieving button title

wagtail/wagtailadmin/widgets.py

@@ -261,14 +261,10 @@ class BaseDropdownMenuButton(Button):
         raise NotImplementedError
 
     def render(self):
-        if 'title' in self.attrs:
-            title = self.attrs['title']
-        else:
-            title = None
         return render_to_string(self.template_name, {
             'buttons': self.get_buttons_in_dropdown(),
             'label': self.label,
-            'title': title,
+            'title': self.attrs.get('title'),
             'is_parent': self.is_parent})