Merge pull request #4231 from hove-io/fix_shape_in_ZE

minor fix

Author: xlqian

source/jormungandr/jormungandr/excluded_zones_manager.py

@@ -100,7 +100,7 @@ def get_all_excluded_zones(cls):
         for zone in excluded_zones:
             # remove the DAMN MYPY to use walrus operator!!!!!
             shape_str = zone.get('shape')
-            if shape_str:
+            if not shape_str:
                 continue
             try:
                 shape = shapely.wkt.loads(shape_str)