Fix likelihood count for Dynesty

bilby/core/sampler/dynesty.py

@@ -690,6 +690,16 @@ class Dynesty(NestedSampler):
         """
         return self.priors.rescale(self._search_parameter_keys, theta)
 
+    def calc_likelihood_count(self):
+        if self.likelihood_benchmark:
+            if hasattr(self, 'sampler'):
+                self.result.num_likelihood_evaluations = \
+                    getattr(self.sampler, 'ncall', 0)
+            else:
+                self.result.num_likelihood_evaluations = 0
+        else:
+            return None
+
 
 def sample_rwalk_bilby(args):
     """ Modified bilby-implemented version of dynesty.sampling.sample_rwalk """