Ticket #10594: fix_null_geometry_querysets.diff

contrib/gis/db/models/sql/query.py

@@ -233 +233 @@
         extra selection objects into Geometry and Distance objects.
         TODO: Make converted objects 'lazy' for less overhead.
         """
+        if value == None:
+            return value
+
         if SpatialBackend.oracle:
             # Running through Oracle's first.
             value = super(GeoQuery, self).convert_values(value, field or GeomField())