OWRank: fix headerState setting warning

kernc · kernc · commit adfb3abe09c4 · 2017-09-26T15:20:43.000+02:00
diff --git a/Orange/widgets/data/owrank.py b/Orange/widgets/data/owrank.py
@@ -549,7 +549,7 @@ def migrate_settings(cls, settings, version):
         # Saved selected_rows will likely be incorrect
         if version is None or version < 2:
             column, order = 0, Qt.DescendingOrder
-            headerState = settings.pop("headerState")
+            headerState = settings.pop("headerState", None)
 
             # Lacking knowledge of last problemType, use discrete ranks view's ordering
             if isinstance(headerState, (tuple, list)):
