message: fix py pickle test exception handling
diff: @@ -142,7 +142,7 @@ class PickleTests(unittest.TestCase):
  from bark.models.behavior import BehaviorUCTSingleAgentMacroActions
  except:
  print("Rerun test with ---define planner_uct=true")
  - exit()
  + return
  params = ParameterServer()
  behavior = BehaviorUCTSingleAgentMacroActions(params)
  