exit ResultsHandler after making TS and params plots if only bkg trials

Author: sathanas31

flarestack/core/results.py

@@ -141,6 +141,7 @@ def __init__(
             # just make the TS and param distr plots
             if len(self.scale_values) == 1 and self.scale_values[0] == 0:
                 self.make_plots(self.scale_labels[0])
+                return
 
         # Create fit bias plots
         # this expects flux_to_ns to be set