Fix missing initalization of dict for retries

Author: JanLuca

varipeps/optimization/optimizer.py

@@ -656,6 +656,7 @@ def random_noise(a):
                     step_chi[random_noise_retries] = []
                     step_conv[random_noise_retries] = []
                     max_trunc_error_list[random_noise_retries] = []
+                    step_runtime[random_noise_retries] = []
 
                     pbar.reset()
                     pbar.refresh()