[meld] sourceview: Don't use meldsettings directly in changed callback

[Kai Willadsen <kaiw src gnome org>]

commit eb4f88f316af8a6274e362c4f818e3bb9b85edd2
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Fri Jul 5 09:47:26 2019 +1000

    sourceview: Don't use meldsettings directly in changed callback

 meld/sourceview.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meld/sourceview.py b/meld/sourceview.py
index c7735d23..296327bc 100644
--- a/meld/sourceview.py
+++ b/meld/sourceview.py
@@ -232,7 +232,7 @@ class MeldSourceView(GtkSource.View, SourceViewHelperMixin):
 
     def on_setting_changed(self, settings, key):
         if key == 'font':
-            self.override_font(meldsettings.font)
+            self.override_font(settings.font)
         elif key == 'style-scheme':
             self.highlight_color = colour_lookup_with_fallback(
                 "meld:current-line-highlight", "background")