add missing migration

src/c3nav/mapdata/migrations/0033_auto_20170807_1423.py

@@ -0,0 +1,21 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.11.2 on 2017-08-07 12:23
+from __future__ import unicode_literals
+
+import c3nav.mapdata.fields
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('mapdata', '0032_remove_graphnode_space_transfer'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='altitudearea',
+            name='geometry',
+            field=c3nav.mapdata.fields.GeometryField(default=None, geomtype='multipolygon'),
+        ),
+    ]